Write the two possible conversion factors using Avogadro's number:

Answers

Answer 1

One mole of a substance is equal to 6.022 × 10²³ units of that substance The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant.

What is the conversion for Avogadro's number?

Hence, the first conversion is the number fundamentally which is 6.022x1023 particles 1 mole to convert an integer of moles to particles and the other one is the reciprocal of Avogadro's number which is 1 mole 6.022x1023 particles to convert a number of specks to a number of moles.

The word mole mentions Avogadro's number of a substance. For example, a mole of carbon-12 atoms happens to be 12 grams. Moreover, a mole of hydrogen particles is 2 grams while a mole of hydrogen conversion atoms occurs to be 1 gram.

So we can conclude that conversion allying Avogadro's Number of Atoms to Moles and Vice Versa

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Answer 2

The two possible conversion factors using Avogadro's number are:

From moles to number of particles:

1 mole = Avogadro's number of particles

So, the conversion factor is Avogadro's number of particles/mole.

From number of particles to moles:

1 mole = Avogadro's number of particles

So, the conversion factor is 1 mole/Avogadro's number of particles.

What is Avogadro's number?

Avogadro's number is described as the number of atoms, ions, or molecules in one mole of a substance.

The Avogadro constant has defining constant with an exact value of 6.02214076×10²³ reciprocal moles.

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Related Questions

5SO2 + 2MnO4- + 2H205SO42- + 2Mn2+ + 4H+ Calculate the number of grams of SO2 in a sample of air if 7.37 mL of 0.008 M KMnO4 solution are required for the titration.

Answers

Answer:

0.09536 g of SO2 in the sample of air

Explanation:

The first step is to convert the volume of KMnO4 solution to moles. This can be done using the formula:

moles = Molarity x volume (in liters)

So,

moles = 0.008 M x (7.37 mL) x (1 L/1000 mL)

= 0.0000596 moles

Next, we need to find the ratio of moles of SO2 to moles of KMnO4 in the balanced equation:

5SO2 + 2MnO4- + 2H205SO42- + 2Mn2+ + 4H+

From the equation, it can be seen that 2 moles of KMnO4- react with 5 moles of SO2. So,

moles of SO2 = (moles of KMnO4) x (5 moles of SO2 / 2 moles of KMnO4)

= 0.0000596 x (5/2)

= 0.0001495 moles

Finally, to convert moles of SO2 to grams, we can use the formula:

grams = moles x molar mass

Since the molar mass of SO2 is 64 g/mol,

grams = 0.0001495 x 64

= 0.09536 g

So, there are 0.09536 g of SO2 in the sample of air.

Water is constantly diffusing into the cytosol of freshwater single-celled organisms. In order to maintain the proper solute concentrations in the cytosol, contractile vacuoles pump out the excess water. An experimenter placed single-celled organisms into various saline concentrations and recorded the ATP used by the contractile vacuole. The data are shown in the graph. Of the following, which additional investigation can be used to determine when the cells are in an isotonic solutionA. Decreasing the salinity of the environment a little at a time until the ATP usage reaches a maximum
B. Decreasing the salinity of the environment a little at a time until ATP usage reaches a minimum
C. Increasing the salinity of the environment a little at a time until ATP usage reaches a maximum
D. Increasing the salinity of the environment a little at a time until the ATP usage reaches a minimum

Answers

To determine when the cells are in an isotonic solution, the additional investigation that can be used is option B. Decreasing the salinity of the environment a little at a time until ATP usage reaches a minimum.

An isotonic solution is one where the solute concentration outside the cell is the same as the solute concentration inside the cell. In this state, there is no net movement of water into or out of the cell, and the contractile vacuole does not need to pump out excess water. As the salinity of the environment is decreased, the solute concentration outside the cell will decrease, and water will enter the cell, leading to an increase in the workload of the contractile vacuole. However, when the salinity of the environment is decreased to the point where it becomes isotonic with the cytosol of the cell, the workload of the contractile vacuole will reach a minimum, as there is no more excess water to be pumped out.

Therefore, by decreasing the salinity of the environment a little at a time until the ATP usage reaches a minimum, the experimenter can determine when the cells are in an isotonic solution.

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1. There are 3 main types of chemical formulas: empirical, molecular and structural.
Structural formulas identify the location of chemical bonds between the atoms of a
molecule. Consider the following molecular structure below:

(a) Redraw the structure in the form of expanded and condensed structures.
(b) Classify the carbons labelled a and b as primary, secondary or tertiary.
[4 marks]

Answers

(a) Expanded structure:

CH3–CH2–CH–CH3

Condensed structure:

CH3CH2CHCH3

(b) Carbon a is a primary carbon and Carbon b is a secondary carbon.

What are chemical formulas?

Generally, Chemical formulas are symbols used to represent elements and molecules.

They usually consist of the symbols for the elements in the molecule, with subscripts indicating the number of each atom.

For example, the chemical formula for water is H2O, indicating two hydrogen atoms and one oxygen atom.

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a specie with initial concentration 1.4×10^-2 mol L-1 decay by first order kinetics with a rate constant 2.35×10^2L mol-1 s-1. what is the half-life if this specie?​

Answers

Answer:

293 ms

Explanation:

The half-life of a first-order reaction can be calculated using the following formula:

t1/2 = 0.693 / k

Where t1/2 is the half-life and k is the rate constant.

For this reaction, the rate constant is 2.35 x 10^2 L/mol/s, so:

t1/2 = 0.693 / (2.35 x 10^2 L/mol/s) = 0.293 / (2.35 x 10^2) s = 0.000293 s = 293 ms

Answer:

0.293 / 2.35 × 10^2 seconds.

Explanation:

The half-life of a first order reaction can be calculated using the equation:

t1/2 = 0.693 / k

where t1/2 is the half-life, k is the rate constant, and 0.693 is the natural logarithm of 2.

Substituting the values given in the question:

t1/2 = 0.693 / 2.35 × 10^2 L mol-1 s-1 = 0.293 / 2.35 × 10^2 s

So, the half-life of the species is approximately 0.293 / 2.35 × 10^2 seconds.

An anion X-3 has 31 nucleons and has atomic numbe equal to 15. The number of electron having m = 0 i it, is:-

Answers

Answer: 23

Explanation:

because it is been multiplyed by 3 has s 31 nucleons and has atomic numbe equal to 15. The number of electron having m = 0 i

Answer:

The number of electrons with magnetic quantum number m = 0 can be calculated from the atomic number of the element. The atomic number gives the number of protons, and thus the number of electrons in a neutral atom. For the anion X-3, we have 15 - 3 = 12 electrons. The magnetic quantum number m can have integer values from -j to +j, where j is a half-integer representing the total angular momentum quantum number of the electron. In this case, j can be equal to 1/2, 3/2, 5/2, and so on. For the lowest value of j, which is 1/2, the magnetic quantum number m can have two values, +1/2 and -1/2. Thus, there are two electrons with m = 0. The number of electrons with m = 0 is equal to the number of electrons in the lowest energy level, which is the 1s orbital. In this case, two electrons occupy the 1s orbital, and both have m = 0.

Explanation:

Cation - Ca^2+
Anion - O^2-
What is the formula of the neutral compound and the name of the compound?

Answers

The formula of the neutral compound is CaO and the name of the compound is Calcium Oxide.

What is compound?

A compound is a substance formed when two or more elements chemically combine in fixed proportions. Compounds can be either molecules or ionic, and have unique physical and chemical properties. Molecule compounds are composed of atoms covalently bonded, meaning the atoms share electrons. Ionic compounds are composed of ions with a positive or negative charge; these ions are attracted to each other in a crystalline lattice structure. Compounds can be broken down into their separate elements by chemical means, such as electrolysis.

This compound is formed when one Calcium cation (Ca^2+) bonds with one Oxygen anion (O^2-). The two ions have opposite charges, so they attract and form a neutral compound with a charge of 0.

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Calculate the volume of air in liters that you might inhale (and exhale) in 24.0 hours. Assume that each breath has a volume of 0.495 liters, and that you are breathing 13 times a minute.

Answers

The units which are used to represent the volume are mL, L, cm³, m³, etc. The volume of air in liters that you might inhale (and exhale) in 24.0 hours is 10,684.8 L.

What is volume?

The measure of the capacity that an object holds is generally defined as the volume. For example if a beaker can hold 100 mL of water, then its volume is said to be 100mL.

Here in minute, volume is:

15 × 0.495 = 7.42 L

In an hour, volume is:

7.42 × 60 = 445.2

In 24 hours, the volume will be:

Volume = 445.2 × 24 = 10,684.8 L

Thus the volume of air in 24 hours is 10,684.8 L.

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The sugars we have been discussing are made directly through a series of reactions in the____ , which uses co2 as a starting input. a. light reaction a. recall, that under thermodynamic laws, building complex molecules requires the input of energy in the form of sunlight. that energy in photosynthesis comes from the . b. calvin cycle a. through a series of reactions in the , light energy is transformed into energy that is in the form of atp and high-energy electrons carried by nadph. b. in the , h2o is used and outputs as o2. a. in the , atp and nadph enter and output as adp and nadp.

Answers

The sugars we have been discussing are made directly through a series of reactions in the Calvin Cycle, which uses CO2 as a starting input.

Recall that under thermodynamic laws, building complex molecules requires the input of energy in the form of sunlight. That energy in photosynthesis comes from the Light Reaction. Through a series of reactions in the Light Reaction, light energy is transformed into energy that is in the form of ATP and high-energy electrons carried by NADPH. In the Light Reaction, H2O is used and outputs as O2. In the Calvin Cycle, ATP and NADPH enter and output as ADP and NADP. These processes work together to produce glucose and other sugars that are essential for life. The sugars we have been discussing are made directly through a series of reactions in the Calvin Cycle, which uses CO2 as a starting input.

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Consider 1.00 mole of hydrogen gas, H2. How many dihydrogen molecules are present? How many hydrogen atoms are present? What is the mass of this sample?

Answers

Consider 1.00 mole of hydrogen gas, H₂. The number of molecules in  H₂ is12.044 × 10²³  molecules. The number of hydrogen atoms is 12.044 × 10²³  molecules and the mass of the sample is 2 g.

The moles of the hydrogen = 1 mol

The one mole of the substance = 6.022 × 10²³ atoms / molecules

The number of the hydrogen atoms in H₂ = 2 × 6.022 × 10²³ atoms

The number of the hydrogen atoms in H₂ = 12.044 × 10²³  atoms

The number of the hydrogen molecules in H₂ = 12.044 × 10²³  molecules

The molar mass of the  H₂ = 2 g/mol

The moles of the  H₂  = mass / molar mass

The mass of the  H₂  = moles × molar mass

The mass of the  H₂  = 1 ×2

The mass of the  H₂  = 2 g

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A 7.132 gram sample of an organic compound containing only C, H, and O is analyzed by combustion analysis and 11.88 g CO₂ and
3.891 g H₂0 are produced.
In a separate experiment, the molar mass is found to be 132.1 g/mol. Determine the empirical formula and the molecular formula
of the organic compound.

Answers

Answer:

C4H8O4

Explanation:

The empirical formula of a compound can be determined from its elemental composition. To determine the empirical formula, we first need to convert the mass of each element to moles, and then divide by the smallest number of moles of any element to obtain the mole ratio.

From the combustion analysis, the number of moles of CO₂ produced is 11.88 g / 44.01 g/mol = 0.2694 mol. The number of moles of H₂O produced is 3.891 g / 18.015 g/mol = 0.2169 mol.

Next, we convert the carbon and hydrogen present in the compound to moles by dividing the mass of each element by its atomic mass:

C = (7.132 g - 11.88 g - 3.891 g) / 12.01 g/mol = 0.2694 mol

H = 2 * 0.2169 mol = 0.4338 mol

Now, we divide each number of moles by the smallest number of moles (0.2694 mol) to obtain the mole ratio:

C = 0.2694 mol / 0.2694 mol = 1

H = 0.4338 mol / 0.2694 mol = 1.6

O = 0.2694 mol / 0.2694 mol = 1

The empirical formula of the compound is therefore C1H1.6O1, which can be simplified to C1H2O.

To determine the molecular formula, we use the molar mass of the compound, 132.1 g/mol, and compare it to the molar mass calculated from the empirical formula. The molar mass of C1H2O is 12.01 g/mol + 2 * 1.01 g/mol + 16.00 g/mol = 30.03 g/mol. To find the molecular formula, we divide the molar mass of the compound by the molar mass of the empirical formula and multiply each element in the empirical formula by this number:

132.1 g/mol / 30.03 g/mol = 4.40

C = 1 * 4.40 = 4.40

H = 2 * 4.40 = 8.80

O = 1 * 4.40 = 4.40

The molecular formula of the compound is therefore C4H8O4.

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Answer:

11 * CH₂ = C₁₁H₂₂

Explanation:

The empirical formula of a compound can be determined by finding the ratio of the number of atoms of each element present in the compound. To find the empirical formula of this organic compound, we need to calculate the number of moles of each element present in the sample.

First, we find the number of moles of carbon by dividing the mass of CO₂ produced by the molar mass of CO₂:

11.88 g CO₂ / 44.01 g/mol CO₂ = 0.269 mol C

Next, we find the number of moles of hydrogen by dividing the mass of H₂O produced by the molar mass of H₂O:

3.891 g H₂O / 18.02 g/mol H₂O = 0.216 mol H

To find the empirical formula, we divide the number of moles of each element by the smallest number of moles calculated:

0.269 mol C / 0.216 mol H = 1.244

0.216 mol H / 0.216 mol H = 1

So the empirical formula of the organic compound is CH₂.

The molecular formula of a compound is a multiple of its empirical formula, with the multiple determined by the molar mass. To find the molecular formula of this organic compound, we divide the molar mass of the sample by the molar mass of the empirical formula:

132.1 g/mol / (12.01 g/mol + 2 * 1.01 g/mol) = 11

So the molecular formula of the organic compound is 11 * CH₂ = C₁₁H₂₂.



ALLEN

Balance the following reaction.

Cu + Ag(NO3) --> Cu(NO3)2 + Ag

If you are given 2.5 grams of copper and 5 g of silver nitrate


What is the Limiting Reactant? __________ (Cu/AgNO3)

How much of each product do you produce?

_________ g Cu(NO3)2

_________ g Ag

Answers

Answer:

The balanced chemical equation for this reaction is:

2 Cu + Ag(NO3)2 -> 2 Cu(NO3)2 + Ag

The limiting reactant is the reactant that runs out first and determines the amount of product that can be produced. To determine the limiting reactant, we need to calculate the number of moles of each reactant.

From the given mass of copper, we can calculate the number of moles as follows:

2.5 g Cu / 63.55 g/mol = 0.0395 mol Cu

From the given mass of silver nitrate, we can calculate the number of moles as follows:

5 g AgNO3 / 169.87 g/mol = 0.0295 mol AgNO3

Since 0.0295 mol of AgNO3 is less than 0.0395 mol of Cu, AgNO3 is the limiting reactant.

To calculate the amount of each product produced, we can use the stoichiometry of the balanced equation.

For Ag, the reaction produces 1 mole of Ag for every 2 moles of AgNO3, so we have:

0.0295 mol AgNO3 * 1 mole Ag / 2 moles AgNO3 = 0.0148 mol Ag

And converting moles to grams:

0.0148 mol Ag * 107.87 g/mol = 1.59 g Ag

For Cu(NO3)2, the reaction produces 2 moles of Cu(NO3)2 for every 2 moles of AgNO3, so we have:

0.0295 mol AgNO3 * 2 moles Cu(NO3)2 / 2 moles AgNO3 = 0.0295 mol Cu(NO3)2

And converting moles to grams:

0.0295 mol Cu(NO3)2 * 164.46 g/mol = 4.86 g Cu(NO3)2

Therefore, the limiting reactant is AgNO3 (Cu/AgNO3) and the reaction produces 1.59 g of Ag and 4.86 g of Cu(NO3)2.

The balanced chemical equation for the reaction is:

2 Cu + Ag(NO3)2 -> 2 Cu(NO3)2 + Ag

First, let's convert the amount of reactants into moles:

2.5 g of Cu = 2.5 g / 63.55 g/mol = 0.0395 moles of Cu
5 g of AgNO3 = 5 g / 169.87 g/mol = 0.0294 moles of AgNO3

The limiting reactant is AgNO3, as it is the reactant that is present in the smallest amount.

Now, we can use the stoichiometry of the reaction to find the amount of each product produced:

Ag: 0.0294 moles * 1 mole/2 moles = 0.0147 moles = 0.0147 * 107.87 g/mol = 1.58 g
Cu(NO3)2: 0.0294 moles * 2 moles/2 moles = 0.0294 moles = 0.0294 * 164.48 g/mol = 4.87 g

So, you will produce 1.58 g of Ag and 4.87 g of Cu(NO3)2.


Calculate the freezing point of 0.300 molal aqueous solution of magnesium chloride,
(MgCl₂). Assume that the MgCl₂ has ionized completely and the Kf= 1.853 °C / molal

Answers

Answer: answer of the question is given below

Explanation:

Answer:

0.556 °C.

Explanation:

The freezing point depression of a solution can be calculated using the equation:

ΔTf = Kf x molality

Where ΔTf is the change in freezing point, Kf is the molal freezing point depression constant, and molality is the concentration of solute in mol/kg.

For magnesium chloride, Kf = 1.853 °C/molal. The molality of the solution can be calculated as follows:

molality = moles of solute / mass of solvent (in kilograms)

= 0.300 mol / (0.300 mol x 1000 g/mol) = 0.300 g/1000 g = 0.0003 kg/kg = 0.300 mol/kg

Now, substituting the values into the equation:

ΔTf = Kf x molality

= 1.853 °C/molal x 0.300 mol/kg

= 0.556 °C

So the freezing point of the 0.300 molal aqueous solution of magnesium chloride will be lower than the freezing point of pure water by 0.556 °C.



ALLEN

Commercial vinegar contains close to 5 g of acetic acid (ch_3cooh) per 100 ml (1 l = 1000 ml) of solution. What is the molarity of acetic acid in vinegar?.

Answers

If commercial vinegar contains around 5 g of acetic acid (ch 3cooh) per 100 ml (1 l = 1000 ml) in solution, its molarity is 0.83 M.

Molarity is the amount of solute in moles per litre of solution.

Acetic acid's mass is reported as 5.0 g, and the solution's volume is 100.0 mL.

We divide the grammes of acetic acid by the molar mass in order to convert them from grammes to moles.

Acetic acid's chemical formula is CH₃COOH. Molar mass of acetic acid is equal to 2(12.01), 4(1.01), 2(16), 24.02, 4.04, and 32 grammes per mol. Acetic acid has a molecular weight of 5.0/60.06, or 0.083 moles.

Transform mL to L.

1 L equals 1000 mL, as we are aware.

The solution's molarity is equal to 0.083moles per 0.1000L, or 0.83M, thus we divide by 1000 to convert from mL to L. 100/1000 = 0.1000 L

Therefore, 0.83 M of acetic acid is present in vinegar.

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For each of the following, determine the type of reaction. (combination or synthesis, decomposition, double replacement, single replacement, or combustion)
1. 2 Na + Cl2 2 NaCl type:
2. FeCl2 Fe + Cl2 type:
3. C2H4 + 3 O2 2 CO2 + 2H2O type:
4. F2 + 2 NaBr 2 NaF + Br2 type:

Answers

The given equations are of the following type:

1. 2 Na + Cl2 = 2NaCl : Combination reaction

2. FeCl2 = Fe + Cl2 : Decomposition reaction

3. C2H4 + 3 O2 = 2CO2 + 2H2O : Combustion reaction

4. F2 + 2 NaBr = 2NaF + Br2 : Single displacement reaction

Combination reaction: Reaction in which two or more elements or compounds join to form a single compound is called a combination reaction.

Decomposition reaction : Reaction in which one reactant breaks own into two or more products is called a decomposition reaction.

Combustion reaction :  Reaction in which a compound and an oxidant is reacted to produce a new product along with heat and light is called a combustion reaction.

Single displacement reaction : Reaction in which one element is replaced by another in a compound during the reaction is called a single displacement reaction

Double displacement reaction: Reaction in which two reactants exchange ions to form two new compounds double displacement reaction.

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What chemical is KOH? Calculate it's molar mass, showing your work

Answers

Answer:

56.11 g/mol

Explanation:

Answer:

56.105 g/mol

Explanation:

KOH is Potassium Hydroxide, a strong base commonly used in various industrial and laboratory applications.

The molar mass of KOH can be calculated by adding the atomic masses of its elements:

Potassium (K) - 39.098 g/mol

Oxygen (O) - 15.999 g/mol

Hydrogen (H) - 1.008 g/mol

So, the molar mass of KOH is:

39.098 g/mol + 15.999 g/mol + 1.008 g/mol = 56.105 g/mol


ALLEN

What is the mass of 4.00cm ^ 3 of sodium with density = 0.97g / cm?​

Answers

Answer:

he given density is 0.97 g/cm³, and the volume is 4.00 cm³.

To find the mass, we can use the formula:mass = density x volume

Substituting the given values,

we get:mass = 0.97 g/cm³ x 4.00 cm³mass = 3.88 g

Therefore, the mass of 4.00 cm³ of sodium with a density of 0.97 g/cm³ is 3.88 g.

Explanation:

Calculate the Percentage of 1) Oxygen in Calcium nitrate dihydrate.​

Answers

Answer:

Percentage of Oxygen in Ca(NO3)2•2H2O

Ankit Mishra

Calculate the Percentage of 1) Oxygen in Calcium nitrate dihydrate.

Calcium nitrate dihydrate, also known as calcium nitrate (II) hydrate, has the chemical formula Ca(NO3)2•2H2O. The percentage of oxygen in calcium nitrate dihydrate can be calculated by determining the number of oxygen atoms in the formula and dividing that by the total number of atoms in the formula, then multiplying by 100 to express the answer as a percentage.

Here's the calculation:

1 calcium atom (Ca) = 40.08 g/mol

2 nitrogen atoms (N) = 14.01 g/mol

10 oxygen atoms (O) = 16.00 g/mol

So, the molar mass of Ca(NO3)2•2H2O is (40.08 + 2 x 14.01 + 10 x 16.00) g/mol = 158.08 g/mol.

The percentage of oxygen in calcium nitrate dihydrate can then be calculated as follows:

(10 x 16.00 g/mol) / 158.08 g/mol x 100% = 63.18%

So, the percentage of oxygen in calcium nitrate dihydrate is approximately 63.18%.

All of the following are common symptoms of all dissociative disorders except __________. A. Wandering away from home b. Mental health problems c. Feelings of detachment d. A blurred sense of identity please select the best answer from the choices provided a b c d.

Answers

All of the following are common symptoms of all dissociative disorders except A. Wandering away from home.

Common Symptoms of Dissociative Disorders

Dissociative disorders are a group of mental health conditions characterized by a disruption in one's normal sense of identity, consciousness, and perception. Although there are various types of dissociative disorders, they share several common symptoms. One of the most prominent symptoms of dissociative disorders is the experience of mental health problems, such as anxiety, depression, and post-traumatic stress disorder (PTSD). Individuals with dissociative disorders may also experience feelings of detachment or disconnection from themselves, their environment, and their emotions. This detachment can manifest as a sense of being outside oneself or as a feeling of numbness or emotional blunting. Another hallmark symptom of dissociative disorders is a blurred sense of identity, which may present as confusion about one's personal identity or amnesia for important life events. Finally, it is important to note that not all individuals with dissociative disorders will experience every symptom, and the severity of symptoms can vary widely between individuals.

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C3H7COOH + O2 → CO₂ + H₂O
CO2+H2O
The coefficient of oxygen =.......


Whoever is constantly answering my questions just know that I love you

Answers

Answer:

The coefficient of oxygen in the balanced equation is 2.

Explanation:

Sophie is pushing her bike up a hill with 10N if she increases her force to 12n

Answers

Sophie is pushing her bike up a hill with 10N if she increases her force to 12N, then there will be decrease the bike's mass. Therefore, the correct option is option C.

What is force?

A force is indeed an effect in physics that may modify the velocity of an item. A force can cause a mass object to change its velocity (e.g., moving from rest), i.e., to accelerate.

Intuitively, force may be characterized as a push or even a pull. A force is a vector quantity since it has both direction and magnitude. It really is measured in newtons, the SI unit of mass (N). Sophie is pushing her bike up a hill with 10N if she increases her force to 12N, then there will be decrease the bike's mass.

Therefore, the correct option is option C.

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How is the molar mass of a compound similar to its formula mass?


How is the molar mass of a compound different from its formula mass?

Answers

Answer:

the fromu;la is 50

Explanation:

becuase it is soooopo understand

Answer:

The molar mass of a compound is similar to its formula mass in that both represent the sum of the atomic masses of all the elements in the compound. The formula mass is the total atomic mass of the elements in the chemical formula of a compound, while the molar mass is the mass of one mole of the compound.

The molar mass of a compound is different from its formula mass in that the molar mass is a unit of measurement for the amount of substance, whereas the formula mass is simply a numerical value representing the total atomic mass of the elements in the compound. The molar mass is expressed in units of grams per mole (g/mol), whereas the formula mass is expressed in atomic mass units (amu). Additionally, the molar mass takes into account the Avogadro's constant, which is the number of entities in one mole of a substance, whereas the formula mass does not.

Explanation:

ALLEN

Practice Problem 13.27b Predict the products that are expected when the following compound is heated with concentrated HBr. Modify the given drawing of the starting material to draw only the organic products. O- CH3 Edit

Answers

The given starting material is not visible, but if it has an -OH functional group attached to a methyl group (-OCH3), then the reaction with concentrated HBr will lead to the following products:

The -OH group will be replaced by a Br atom, forming methyl bromide (CH3Br).

Water (H2O) will also be produced as a byproduct of the reaction.

So, the organic products of the reaction are:

O-CH3 + HBr → CH3Br + H2O

In organic chemistry, a methyl group is an alkyl produced from methane that has the chemical formula CH3, one carbon atom bound to three hydrogen atoms. The group's name is frequently shortened to Me in formulas. In numerous organic molecules, this hydrocarbon group can be found. In most compounds, the group is extremely stable.

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Lechatliers principle
Need help figuring out the arrows directions.

Answers

According to Lechatliers principle, as the concentration  of HCl is decreasing, the reaction will shift to the reactant side to increase HCl, then the Keq decreases, since product concentration is decreases.

What is Lechatliers principle ?

According to Lechatliers principle, when an any disorder imbalance the equilibrium of a reaction system, the system itself balances the factors and shifts to a new equilibrium.

If the concentration of any component is increased, then the reaction shifts to the direction in which it is consumed. If the concentration is decreased, the reaction shifts to the direction in which the component is produced.

Hence, as the HCl decreases, the reaction shifts to backwards direction to produce more HCl, then, concentration of reactants HCl and Mg increases, and that products and Keq decreases.

The reaction is an exothermic reaction. Hence, as the temperature is increased, the reaction shifts to the backward direction in which heat is used. Hence, reactant concentration increases, product concentration decreases, Keq also decreases.

If the temperature is reduced, the reaction shift to the forward direction. Hence, concentration of HCl, and Mg decreases but MgCl2 increases and Keq increases.

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how many molecules are represented 11.5 g of C2H5OH

Answers

According to the question the molar mass of C2H5OH is 46.07 g/mol.

What is molar mass?

Molar mass is the mass of a given substance (expressed in grams) divided by the amount of substance (expressed in moles). It is also known as the molecular weight of a substance, and is the sum of the atomic masses of all the atoms in a molecule. Molar mass is used to calculate the mass of a compound in a given volume, and is commonly used in the fields of chemistry, physics, and biology to identify, quantify, and measure substances. It is also used to determine the density of a given substance, and is an important part of formulas used to calculate the concentration of a particular substance in solution.

To calculate the number of molecules, we must divide the given mass of 11.5 g by the molar mass of C2H5OH. This gives us a result of 250.03 molecules of C2H5OH.

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With respect to the reaction shown,

BLANK # 1: type of compound that
will form

BLANK #2: name of the reaction

Answers

With respect to the reaction shown, the type of compound that will form is a hemiketal, and the name of the reaction is "hemiketal formation.

What are hemiacetals and hemiketals?

A hemiketal is created when an alcohol reacts with a ketone, whereas a hemiacetal is created when an alcohol reacts with an aldehyde.

Organic substances called hemiacetal and hemiketal are hybrid molecules that have an ether group and a hydroxyl group in the same molecule.

The name of reaction that forms hemiketals and hemiacetals is called "hemiacetal formation" or "hemiketal formation," depending on the specific functional group involved.

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Kinetic energy is proportional to the square of the car's speed. How do the tables and your graph on the previous page show this relationship?(must answer rn!!!)

Answers

Answer:

The Speed squared is equal to the Kinetic Energy

Explanation:

1^{2}  = 1

2^{2} = 4

3^{2} = 9

4^{2} = 16

Therefore the data on the table proves that the Speed squared is equal to the Kinetic Energy

state and explain Five causes of accidents in science laboratory​

Answers

Explanation:

Chemical hazards: Handling toxic substances can cause irritation and carcinogenicity.

Biological hazards: Biological hazards include hazards from working with small animals, working with bloodborne pathogens and working with biological agents, such as viruses and bacteria.

Physical hazards: Physical hazards include exposure to noise, poor posture and the explosibility and flammability of substances.

Safety hazards: Safety hazards include unbalanced centrifuges, danger when handling hot sterilized items and electrical hazards, such as shock, explosions, blasts and electrocutions.

Allergy hazards: A common allergy hazard in the laboratory setting is a latex allergy, as many of the materials used in a laboratory setting are latex.

Dangers in the laboratory setting can also come from unsafe practices, including:

Working alone in the laboratory

Neglecting to wear a lab coat

Lack of safety training

This table shows the relationship between the force on an object and the object's resulting acceleration.
Force vs. Acceleration
Force (N)
0
4
8
12
Acceleration
(m/s/s)
0
O 0.2 kg
O2 kg
O 0.5 kg
O 1 kg
2
4
6
What is the mass of the object?
HELP!!!!

Answers

2Kg is the mass of the object. Therefore, the correct option is option B among all the given options.

What is Acceleration?

Acceleration is the rate at which velocity varies over time, both in terms of speed and direction. A point or object travelling in a straight path called accelerated if it accelerates or decelerates.

Regardless of whether the speed remains constant, movement on a circle becomes accelerated because of direction is always changing. Both redistribution to acceleration in all other types of motion.

F (N)    Acceleration (m/s/s)

0            0

4            2

8            4

12          6

for the set 4,

F =ma

m = F/a

4/2=2

8/4= 2

12/6= 2Kg

Therefore, the correct option is option B.

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Your question is incomplete but most probably your full question was,

This table shows the relationship between the force on an object and the object's resulting acceleration.

F (N)    Acceleration (m/s/s)

0            0

4            2

8            4

12          6

What is mass of the object?

A) 1Kg

B) 2Kg

C) 3Kg

D) 4Kg


What type of reaction would most likely occur when magnesium reacts with bromine?

Answers

you gonna get magnesium bromide MgBr2

Magnesium is metal and bromine is non-metal, and the combination of the two produces an ionic compound called magnesium bromide

Used as a catalyst.

Used for position-specific analysis of Triglycerols.

Widely used as an anticonvulsant for the treatment of neuropathy.

It is used as a mild sedative.

Consider the pair of reactions. Draw the major organic product of each reaction, then predict the type of elimination mechanism, and compare the rates. tion, then precies the type of elimination Reaction 1: :: ethanol +:0—H product 1 :0 heat Reaction 2: :C1: +:0—H ethanol → heat product 2 Draw product 1. Draw product 2. Select Draw Rings More Erase Select Draw Rings More Erase Identify the mechanism of each reaction. Compare the rates of each reaction. O O O O Reaction 2 occurs by an El mechanism. Reaction 1 occurs by an El mechanism. Reaction 1 occurs by an E2 mechanism. Reaction 2 occurs by an E2 mechanism. O O O Reaction 1 is faster than reaction 2. Both reactions occur at the same rate. Reaction 2 is faster than reaction 1.

Answers

The expected dehydration product of 1 equiv. of a primary alcohol using H2SO4 as the dehydrating agent is an alkene. Here's the reaction and the product: CH3CH2CH2CH2OH + H2SO4 → CH3CH2CH=CH2 + H2O

The product is 1-butene.

In the E2 reaction, a proton is taken away from the carbon next to the alcohol, creating a double bond and releasing a water molecule in the process.

Organic molecules called primary alcohols have an alcohol functional group with a carbon atom that is free of any alkyl substituents. The typical formula for primary alcohols is CnH2n+1OH, where n is the number of carbon atoms in the molecule. Ethanol, methanol, propanol, and butanol are examples of main alcohols.

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Note: The correct option would be as bellow,

Primary alcohols can also dehydrate to alkenes. Unlike secondary and tertiary alcohols, the dehydration reaction occurs under an E2 elimination instead of an El mechanism, due to the instability of the primary carbocation that would be formed. Consider the reaction: CH3CH2CH2CH OH H2SO4 product Draw the expected dehydration product of 1 equiv. of a primary alcohol. Select Draw Rings More Erase C H

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