In one mole of sodium carbonate, there are 2 moles of sodium , 6 moles of oxygen and 1 mole of C. Hence, in 1.25 moles of the compound, 2.5 moles of Na, 7.5 moles of O and 1.25 moles of C.
What is molar mass ?The molar mass of a compound is the mass of one mole of the compound. One mole of any compound contains 6.02 × 10²³ atoms. This number is called Avogadro number.
2. Convert 2.50 mol of Na2CO3 to mass in g.
Molar mass of sodium carbonate = 106 g/mol
then, mass of 2.50 mol = 265 g.
3. Convert 5.50 g of Na2CO3 to mol.
Number of moles in 5.50 g of sodium carbonate = 5.50 g/ 106 = 0.051 moles.
4.Covert 5.50 g of Na2CO3 to number of particles
Now, one mole of sodium carbonate contains Avogadro number of atoms or molecules . Then number of particles in 5.50 g that is 0.051 moles is:
0.051 × 6.022 × 10²³ = 3.072 × 10²² particles.
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What quantity in moles of CaF2 are in 75.5G of CaF2?
Considering the definition of molar mass, the amount of moles of CaF₂ in 75.5 g of CaF₂ is 0.968 moles.
Definition of molar massThe molar mass of substance is a property defined as the amount of mass that a substance contains in one mole.
The molar mass of a compound is the sum of the molar mass of the elements that form it multiplied by the number of times they appear in the compound.
Molar mass of CaF₂In this case, you know the molar mass of the elements is:
Ca= 40 g/moleF= 19 g/moleThe molar mass of the compound CaF₂ is calculated as:
CaF₂= 40 g/mole + 2× 19 g/mole
Solving:
CaF₂= 78 g/mole
Moles of 75.5 g of CaF₂You can apply the following rule of three: If by definition of molar mass 78 grams of the compound are contained in 1 mole, 75.5 grams of the compound are contained in how many moles?
moles= (75.5 grams× 1 mole) ÷78 grams
moles= 0.968 moles
Finally, the amount of moles is 0.968.
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A student measures the mass of a solution before and after a chemical reaction takes place. In both cases the student measures the mass to be 50.25 g on an electronic balance with an uncertainty of 0.05 g. The student realizes that the ranges of uncertainty for each measurement overlap exactly. Which claim can the student make?
(a) The mass definitely stayed the same because the ranges of uncertainty overlap exactly.
(b) We can't know for sure whether or not the mass changed, but it seems reasonable to claim that the mass did not change, given that the ranges of uncertainity overlap.
(c) The mass definitely stayed the same because the measurement of 50.25 g was obtained each time.
The correct option is (b) We can't know for sure whether or not the mass changed, but it seems reasonable to claim that the mass did not change, given that the ranges of uncertainty overlap.
The overlap of the ranges of uncertainty for each measurement indicates that the masses of the solution before and after the reaction are consistent with each other. However, this does not provide definite proof that the mass did not change, as there is still some uncertainty associated with the measurements. The student's conclusion is reasonable, given the information provided, but further investigation is needed to determine if the mass did actually stay the same.
In scientific experiments, it is common to make multiple measurements of a quantity and report the results along with the associated uncertainty. The uncertainty represents the degree of precision with which the measurement was made, and it is typically expressed as a range of values. In this case, the student made two measurements of the mass of the solution with an uncertainty of 0.05 g, and the results were 50.25 g ± 0.05 g for both measurements.
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Which symbol is the correct notation for the element silicon?
Responses
Si
Si
SI
SI
S
S
Sil
The correct notation for the element silicon is "Si".
Silicon is a chemical element with the symbol Si and atomic number 14.
It is a metalloid, meaning that it has properties of both metals and nonmetals. Silicon is the second most abundant element on Earth, after oxygen, and it is a major component of rocks, sand, and minerals. It is also a crucial element in many technological applications, particularly in the electronics industry, where it is used to make semiconductors, computer chips, and solar cells.
Silicon has a crystalline structure and is a hard, brittle, and blue-grey material. It is not found in its pure form in nature, but is instead obtained from the purification of silicon dioxide, which is commonly found in sand and quartz. Silicon is also found in various minerals, such as mica, feldspar, and talc.
Silicon has many unique properties that make it useful in various applications. For example, it is a semiconductor, meaning that its electrical conductivity can be controlled by adding impurities to it in a process called doping. This property is essential for the production of electronic components, such as transistors and diodes.
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What are the characteristics of equilibrium constant
The equilibrium constant, represented as Kc or Keq, is a value that expresses the extent of a chemical reaction at equilibrium
The characteristics of the equilibrium constant include:
It is a constant value: The equilibrium constant has a fixed value at a given temperature and pressure for a particular chemical reaction. It is independent of the initial concentrations (or partial pressures) of the reactants and products, and it does not change with time once equilibrium has been reached. It is related to the degree of completion of a reaction: The magnitude of the equilibrium constant indicates the degree to which a reaction has proceeded towards completion. It is affected by temperature: The equilibrium constant is dependent on temperature. It depends on the stoichiometry of the reaction: The equilibrium constant is calculated based on the stoichiometry of the balanced chemical equation for the reaction. It can be used to predict the direction of the reaction: The value of the equilibrium constant can be used to predict the direction in which the reaction will proceed under certain conditions.
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Which two measurable heats is heat of solution made up of?
The heat of solution is made up of two measurable heats, the heat of hydration and the heat of lattice energy.
The heat of hydration is the amount of heat released when one mole of a substance is dissolved in water, and the heat of lattice energy is the amount of heat released when one mole of a solid ionic compound is formed from its gaseous ions.
Together, these two heats make up the heat of solution, which is the overall amount of heat released or absorbed during the dissolution of a substance in a solvent.
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When I do (10*1000)/(1x10^-6) I don’t get that answer what am I doing wrong
One gram is 10⁶ micrograms. One kilogram is 1000 grams. Then 1 kg is 10⁹ micrograms. Therefore, 10 kg is equal to 10¹⁰ grams.
What are mass units ?Mass of a substance is the measure of its total amount. Mass is an extensive unit. Mass can be expressed in various units. The SI unit of mass is grams.
We know that,1 kg = 1000 g = 10³ g.
one microgram = 10⁻⁶ g or,
one gram = 10⁶ micrograms.
Now, one kg = 10³ g, then,
one kg = 10³× 10⁶ micrograms = 10⁹ micrograms.
Then micrograms equivalent to 10 kg is 10 times the amount in 1 kilogram
that is, 10 kg = 10 ×10⁹ micrograms = 10¹⁰ micrograms.
This way, you will get the correct answer.
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Which one of the following amino acids is MOST likely to participate in hydrogen bonding with water?
valine
alanine
leucine
asparagine
phenylalanine
The amino acid that is most likely to participate in hydrogen bonding with water is asparagine (Asn).
Asparagine contains an amide functional group (-CONH-) in its side chain, which can act as a hydrogen bond donor and acceptor. This allows asparagine to interact with water molecules through hydrogen bonding, making it more hydrophilic (water-loving) than the other amino acids listed. Valine (Val), leucine (Leu), and phenylalanine (Phe) are hydrophobic (water-fearing) amino acids because their side chains do not contain functional groups that can participate in hydrogen bonding with water. Alanine (Ala) contains a methyl functional group (-CH3) in its side chain, which is also hydrophobic and does not participate in hydrogen bonding. Therefore, asparagine is the most likely amino acid to participate in hydrogen bonding with water.
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In an experiment, sulfuric acid reacted with different volumes of sodium thiosulfate in water. A yellow precipitate was formed during the reaction. A cross drawn at the base of each flask became gradually invisible due to the formation of this yellow precipitate. The time taken for the cross to become invisible was recorded. A partial record of the experiment is shown.
Experimental Record
Flask Volume of H2SO4 Volume of Sodium Thiosulfate Volume of Water Time
1 5 mL 50 mL 0 mL 19 seconds
2 5 mL 40 mL 10 mL
3 5 mL 30 mL 20 mL
4 5 mL 20 mL 30 mL
Based on factors that affect the rates of chemical reactions, which of the following would describe the trend expected in the table?
Based on factors that affect the rates of chemical reactions, the trend expected in the table is that as the volume of sodium thiosulfate in water increases, 1) 5 mL 50 mL 0 mL 19 seconds
what is sodium thiosulfate ?
Sodium thiosulfate (Na2S2O3) is a salt composed of sodium, sulfur, and oxygen atoms. It is a colorless, crystalline solid that dissolves in water and has a variety of uses in different fields.
One of the most common uses of sodium thiosulfate is as a photographic fixer, where it is used to remove unexposed silver halide from photographic films and papers. It is also used as a neutralizing agent for chlorine and other oxidizing agents in water treatment, as a dechlorinating agent in the treatment of wastewater, and as a reagent in the laboratory for different chemical reactions.
Based on factors that affect the rates of chemical reactions, the trend expected in the table is that as the volume of sodium thiosulfate in water increases (
As the concentration of sodium thiosulfate increases, the frequency of effective collisions between the reactant molecules and the likelihood of successful collisions increases, resulting in a faster reaction rate. Therefore,
Flask 1 -- 1) 5 mL 50 mL 0 mL 19 seconds(with the highest concentration of sodium thiosulfate) should have the shortest time taken for the cross to become invisible, and
Flask 4 -- 4) 5 mL 20 mL 30 mL(with the lowest concentration of sodium thiosulfate) should have the longest time taken for the cross to become invisible.
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two gas tanks are linked by a connecting tube of negligible volume with a valve. one contains 15 l of nitrogen at 7.2 atm of pressure. the other contains 8.3 l of helium at 4.1 atm of pressure. if the valve is opened, what is the final pressure of the two tanks combined? select one: a. 142 atm b. 4.5 atm c. 6.1 atm d. 0.48 atm
The final pressure of the two tanks combined is c)6.1atm.So,correct option is c.
Boyle's law, likewise alluded to as the Boyle-Mariotte law, or Mariotte's regulation (particularly in France), is an exploratory gas regulation that portrays the connection among tension and volume of a bound gas. Boyle's law has been expressed as: Numerically, Boyle's regulation can be expressed as: or where P is the pressure of the gas, V is the volume of the gas, and k is a consistent. Boyle's law expresses that when the temperature of a given mass of restricted gas is constant, the result of its pressure and volume is likewise inversely proportional to each other.
According to boyle's law total pressure of any tank will be pressure exerted by it on a total volume of container.
In other words,pressure exerted by each tank =pressure value × (total volume of container)
Therefore,
From first tank, pressure is =7.2 × [15L/(15+8.3)]
=>pressure of first tank is = 7.2 ×(15/23.3)
=>pressure of first tank is =7.2×0.64377=4.635atm
Now,pressure of second tank is =4.1 × [8.3 / (8.3+15) ]
=>pressure of second tank is =(4.1) × [8.3 / 23.3]
=>pressure of second tank is =4.1×0.356=1.46atm
Therefore,total pressure exerted by two tanks combines=1.46atm + 4.635atm=6.095atm=6.1atm.
Hence,option c is correct.
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what is the relationship between reactivity and the location of each alkaline metal in the periodic table
The reactivity of alkaline metals generally increases as you move down the group in the periodic table. This means that the most reactive alkaline metals are located at the bottom of the group and the least reactive are located at the top.
The reason for this trend is due to the electronic configuration of the atoms of these elements. As you move down the group, the outermost electron becomes increasingly farther from the positively charged nucleus, and as a result, the electron is held less tightly to the atom. This makes it easier for the atom to lose this outermost electron, resulting in greater reactivity.
In addition, as you move down the group, the atomic radius of the alkaline metals increases. This increase in atomic size leads to a decrease in ionization energy, which is the energy required to remove an electron from an atom. This makes it easier for the atoms to lose electrons, increasing their reactivity.
Therefore, the trend in reactivity of alkaline metals from the top to the bottom of the periodic table is as follows: Lithium (Li) is the least reactive, followed by Sodium (Na), Potassium (K), Rubidium (Rb), and Cesium (Cs), which is the most reactive.
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A 25.0 g sample of metal at
16.0 °C is warmed to 22 1 °C
by 259 J of energy.
What is the change in temperature
for the metal?
The temperature change is 6.1 °C .
What is temperature change?Temperature change refers to a change in the degree of hotness or coldness of an object or system. It is a measure of the amount of heat added or removed from an object or system and is expressed in units of temperature.
Temperature change occurs when heat is transferred from one object to another or when heat is added to or removed from a system. This transfer of heat can be due to a variety of factors, including conduction, convection, radiation, and phase changes.
The temperature change is;
22.1°C - 16.0 °C
= 6.1 °C
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What is the average velocity of an object that travels a total displacement of
24 meters in 3 seconds? Round to 1 sig fig. Do not include units in your
answer.
The average velocity of an object that travels a total displacement of 24 meters in 3 seconds is 8 m/sec.
What do you mean by an average velocity ?The term average velocity is defined as the ratio of the total distance traveled by the object to the total time taken by the object to cover that amount of distance.
Average velocity is calculated by dividing the displacement by the total time.
Given:
Displacement = 24 meters
Time = 3 seconds
By using the formula as follows:
Average speed = Total distance / Total time
S = 24 / 3
S = 8 m/sec.
Thus, the average speed of the object is 8 m/sec’s.
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Which solution will exhibit the smallest increase in boiling point compared to plain water?
When table salt is added to water, a solution is created that has a greater boiling point than just plain water.
How does the boiling point of a solution compared to the pure solvent?Because the solution (which has a lower vapour pressure) must be heated to a higher temperature in order for the vapour pressure to match the external pressure, the boiling point of a solution will thus be higher than the boiling point of the pure solvent (i.e., the boiling point).The polar substance always has the higher boiling point, which denotes stronger attraction forces, or stronger intermolecular forces, between individual molecules. Because freezing or solidification promotes order and reduces entropy, solutions have lower freezing points than pure solvents or solutes.
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Answer: The answer is 0.5 M AIN
Explanation:
Find the number of moles in 15 grams of H2O
Answer: 0.83 mole
Explanation:
H2O has a gram-formula mass of 18 (hydrogen is 1 each, oxygen is 16).
If you have 15 grams, you have less than one mole.
15/18=0.83.
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Hope this helps.
MM4343
Answer:
0.83 moles
Explanation:
The number of moles in 15 grams of water (H2O) can be calculated as follows:
First, we need to determine the molecular weight of H2O. It is composed of 2 hydrogen atoms (H) and 1 oxygen atom (O). The molecular weight of H2O can be calculated as follows:
(atomic weight of H x 2) + (atomic weight of O) = 2 x (1.01 g/mol) + 16.00 g/mol = 18.02 g/mol
Next, we can use the formula:
number of moles = mass / molecular weight
where mass is given as 15 grams.
number of moles = 15 g / 18.02 g/mol = 0.83 moles
Allen
what is the highest oxidation state for nb?
The highest oxidation state for Nb (niobium) is +5.
Oxidation is the loss of electrons in a chemical reaction. For the element niobium (Nb), the highest oxidation state is +5. This is because niobium has five valence electrons in its outermost shell, which it can lose to form a +5 oxidation state.
This is commonly seen in compounds such as Nb₂O₅ (niobium pentoxide) and NbF₅ (niobium pentafluoride). That being said, it is important to note that niobium can also form lower oxidation states, such as oxidation state +3 and +4. However, the +5 state is the highest possible for niobium.
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The specific heat of copper is 0.385 J/g °C. How much thermal energy is required to increase the temperature of a 20g sample of copper from 20°C to 50°C? a. 154 J
b. 385 J c. 308 J
d. 231 J
The amount of thermal energy required to increase the temperature of the 20 g sample of copper from 20°C to 50°C is 231 J, which corresponds to option (d).
The amount of thermal energy required to increase the temperature of a substance can be calculated using the formula:
Q = m x c x ∆T
where Q is the thermal energy (in joules), m is the mass of the substance (in grams), c is the specific heat of the substance (in joules/gram°C), and ∆T is the change in temperature (in °C).
In this case, we are given that the specific heat of copper is 0.385 J/g°C, the mass of the copper sample is 20 g, and the temperature change is from 20°C to 50°C. Substituting these values into the formula, we get:
Q = 20 g x 0.385 J/g°C x (50°C - 20°C)
Q = 20 g x 0.385 J/g°C x 30°C
Q = 231 J
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true or false? as you go left to the right across the periodic table, atoms get more and more protons and electrons, therefore the radius gets larger. explain your answer.
False. As you go from left to right across the periodic table, the number of protons and electrons in the atoms increases, but the atomic radius decreases.
This is due to the increasing nuclear charge (number of protons in the nucleus) that attracts the electrons more strongly, pulling them closer to the nucleus and reducing the size of the atom. This effect is only partially offset by the addition of more electrons in higher energy levels, as these are further away from the nucleus and have less influence on the overall size of the atom. Protons and electrons are subatomic particles that make up atoms. Protons are positively charged particles found in the nucleus of an atom, while electrons are negatively charged particles that orbit the nucleus in shells or energy levels.
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calculate the maximum numbers of moles and grams of iodic acid (hio3) that can form when 373 g of iodine trichloride reacts with 140.5 g of water:
Number of moles of Iodic acid is 1.59 moles and the number of moles of Water is 7.80 moles.
Iodic acid that can form when 373 g of iodine trichloride reacts with 140.5 g of water
The balanced chemical equation is,
2ICl₃ + 3H₂O → ICI + HIO₃ + 5HCl
Mass of Iodine trichloride is 373 g.
Mass of H₂O is 140.5 g.
Number of moles = mass / molar mass
molar mass of ICl3 is 233.5g/mole.
molar mass of water is 18g/mole.
Number of moles of ICl₃ = 373g / 233.5g/mole
= 1.59 moles
Number of moles of H₂O = 140.5 g / 18g/mole
= 7.80 moles
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a 1.07 g sample of a monoprotic acid is dissolved in water and titrated with 0.210 m koh. what is the molar mass of the acid if 26.5 ml of the koh solution is required to neutralize the sample?
The molar mass of the monoprotic acid, given that 1.07 g of the acid was dissolved in water is 192.27 g/mol
How do I determine the molar mass of the monoprotic acid?We'll begin by obtaining the mole of KOH in the solution. Details below:
Molarity of KOH = 0.210 MVolume of KOH = 26.5 mL = 26.5 / 1000 = 0.0265 LMole of KOH =?Mole = Molarity x Volume
Mole of KOH = 0.210 × 0.0265
Mole of KOH = 0.005565 mole
Next, we shall determine the mole of the monoprotic acid. Details below:
Balanced equation:
HA + KOH —> KA + H₂O
From the balanced equation above,
1 mole of KOH reacted with 1 mole of HA.
Therefore,
0.005565 mole of KOH will also react with 0.005565 mole of HA.
Finally, we shall determine the molar mass of the monoprotic acid. Details below:
Mole of monoprotic acid = 0.005565 moleMass of diprotic acid = 1.07 gMolar mass of monoprotic acid =?Molar mass = mass / mole
Molar mass of monoprotic acid = 1.07 / 0.005565
Molar mass of monoprotic acid = 192.27 g/mol
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a sample of an unknown compound gas contains 34g of that gas occupies 6.7l at 2 atm and has a temp of 182.5k what is the molecular weight and what gas do you believe it to be?
The molecular weight of the sample of unknown gas that occupies 6.7L at 2 atm and has a temperature of 182.5K is 38.02g/mol.
How to calculate molecular weight?The molecular weight or mass of a substance can be calculated from the number of moles in the substance. However, the number of moles of the substance can be calculated using Avogadro's equation as follows:
PV = nRT
Where;
P = pressureV = volume n = number of molesT = temperatureR = gas law constant2 × 6.7 = n × 0.0821 × 182.5
13.4 = 14.98n
n = 0.894 moles
molecular weight = 34g ÷ 0.894mol = 38.02g/mol
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a sample has a mass of 23.5g. when the sample is lowered into the water in a graduated cylinder, the water level rises from 23.8 ml to 28.5 ml. what is the density of this metal?
In the given sample, when the water level is rises from 23.8ml to 28.5 ml, the density of the metal is 5.00 g/cm³
To find the density of the metal, we need to use the formula:
density = mass / volume
We are given the mass of the metal as 23.5 g. To find the volume of the metal, we need to subtract the initial volume of water in the cylinder from the final volume of water after the metal is added. The difference in volume is equal to the volume of the metal.
The initial volume of water is 23.8 ml, and the final volume of water is 28.5 ml, so the volume of the metal is:
volume = final volume - initial volume
volume = 28.5 ml - 23.8 ml
volume = 4.7 ml
Now we can substitute the values for mass and volume into the density formula:
density = mass / volume
density = 23.5 g / 4.7 ml
We need to convert the volume to cubic centimeters (cm³) because the units of density are expressed in g/cm³.
1 ml is equal to 1 cm³, so:
density = 23.5 g / 4.7 cm³
density = 5.00 g/cm³ (rounded to two decimal places).
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An organic compound containing 40% carbon, 6.67% hydrogen and rest of oxygen, has the molecular mass 180g.mol-1. Find out the EF as well as MF of the compound.
Answer:
The EF of the compound is CH2O and the MF is C6H12O6.
Explanation:
To find the empirical formula (EF) of the compound, we need to determine the simplest whole number ratio of the atoms in the compound. We can assume we have 100 g of the compound, which means we have:
40 g of carbon
6.67 g of hydrogen
53.33 g of oxygen (since the rest of the compound is oxygen)
Next, we can convert the masses to moles:
Moles of carbon = 40 g / 12.01 g/mol = 3.33 mol
Moles of hydrogen = 6.67 g / 1.01 g/mol = 6.61 mol
Moles of oxygen = 53.33 g / 16.00 g/mol = 3.33 mol
We then divide each of the mole values by the smallest number of moles, which is 3.33, to get the simplest whole number ratio:
Carbon: 3.33 / 3.33 = 1
Hydrogen: 6.61 / 3.33 = 1.98 (rounded to 2)
Oxygen: 3.33 / 3.33 = 1
So the EF of the compound is CH2O.
To find the molecular formula (MF), we need to know the molecular mass of the EF. The empirical formula mass (EFM) of CH2O is:
EFM = (1 x 12.01 g/mol) + (2 x 1.01 g/mol) + (1 x 16.00 g/mol) = 30.03 g/mol
We can then calculate the molecular formula mass (MFM) by dividing the given molecular mass (180 g/mol) by the EFM:
MFM = 180 g/mol / 30.03 g/mol = 6
This means the MF is 6 times the EF, or C6H12O6. Therefore
What is the empirical formula for the molecular formula given?
Molecular formula: C5H120
OC₂H6O
OCH5O
O C3H6O
O C5H12 O
The chemical composition The empirical formulas for the other three molecular formulas are as follows: C5H12O has the same empirical formula, and OCH5O is COH, OC2H6O is CH3O, and C3H6O is CH2O.
What connection exists between the molecular formula and the empirical formula?The kind of chemical formula known as an empirical formula represents the simplest atom-to-atom relationship found in a chemical formula. The empirical formula and the molecular formula are generally related in the following way: (Molecular Formula = n Empirical Formula).
What distinguishes the molecular formula from the empirical formula?The simplest whole-number ratio of the atoms in a compound is shown by empirical formulae, the number of each type of atom in a molecule is shown by molecular formulas, The structural formulas illustrate the bonds that exist between the atoms of a molecule.
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Answer:
see below
Explanation:
To prevent time-temperature abuse when transporting food, which practice should be followed?
A. Stack all hot potentially hazardous (TCS) food items together in a sturdy cardboard box.
B. Load the delivery truck with potentially hazardous (TCS) cold items first and hot items last.
C. Transport cold potentially hazardous (TCS) food in an ice chest that maintains a temperature of 45 F.
D. Transport potentially hazardous (TCS) hot food in an insulated food container at 135 F or higher
To prevent the time temperature when transporting the food, the practice should be followed is the correct option is D. Transport potentially haza-r-dous ( TCS) hot food in an ins-ul-ated food container at the 135 or the higher.
The average body of the temperature is 98.6 that is 37 °C. The average body temperature, is will be as the high as 99 that is 37.2 °C or will be low as the 97 that is 36.1 °C. The temperature may be varies that is based on the time of the day .
Thus, Transport cold potentially haza-r-dous (TCS) that is hot food in the ins-ul-ated food container at the 135 or the higher.
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in the equation for the formation of nylon 6,6 in the background, the non-polymer product is water (not depicted in the equation). what is the non-polymer product produced in the reaction you used in lab?
Answering a lab report format with questions and sections, including nylon synthesis, yield, and uses.
(1) The name of the nylon produced in this experiment is Nylon 6.
(2) The non-polymer product produced in the reaction used in lab is acetic acid.
(3) Two uses of nylon are:
Nylon is used in the production of clothing and accessories such as stockings, swimsuits, and parachutes.It is also used in the manufacturing of carpets, seat belts, and tire cords.Results & Discussion:
The aim of the experiment was to synthesize nylon and examine its properties.The experimental approach involved the reaction between hexamethylenediamine and adipoyl chloride to form Nylon 6, followed by washing and drying the resulting nylon. This was done to understand the properties of the nylon synthesized.The aspirin % yield was calculated to be lower than 100%. Factors that could have contributed to this include incomplete reaction, loss of product during washing and drying, and impurities in the reactants or solvents used.The experiment helped me understand the synthesis and properties of nylon, which I did not know before. I was surprised by the strength and durability of the nylon synthesized. My favorite part was observing the nylon fibers under the microscope, which gave a closer look at the structure of the material.Learn more about nylon :
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The complete question is :
Post-Lab Questions 1. What is the name of the nylon produced in this experiment? It is not Nylon 6,6 but is named in a similar way. 2. In the equation for the formation of Nylon 6,6 in the background, the non-polymer product is water (not depicted in the equation). What is the non-polymer product produced in the reaction you used in lab? 3. Describe two uses of nylon. Substantiate your descriptions with a resource (library, text, or web site) and properly cite this source. Results & Discussion 1. In one or two sentences tell us what you were trying to accomplish. That is, say what the point of the experiment was. 2. Tell us what your experimental approach was. This is supposed to be a summary of no more than 4 sentences. Tell us what you did and why you did it, but don't give us a step-by-step list of things you did. 3. Comment on how close your aspirin % yield was to 100%. Discuss what factors might have contributed to it being higher or lower than this. 4. Tell us what you learned that you didn't know before and what surprised you. Tell us what your favorite part was and why. COMPOUND MOLECULAR WEIGHT WATER SOLUBILITY(g/L) Density (g/ml) at 20'c Salicylic acid 138.12g/mol 1441.07g/L 1.44 Acetylsalicylic acid 180.16g/mol 1400.25g/L 1.4 Acetic anhydride 102.09g/mol 1080g/L 1.08 Sulfuric acid 98g/mol 1830g/L 1.83
how do mafic and felsic minerals and rocks differ from each other?
Mafic and felsic minerals and rocks are both types of igneous rocks, which form when magma or molten rock cools and crystallizes.
Mafic minerals and rocks are composed of dark-colored minerals, such as olivine, pyroxene, amphibole, and biotite. These minerals tend to be high in magnesium and iron, and are relatively low in silica. As a result, mafic rocks are denser and heavier than felsic rocks.
Felsic minerals and rocks, on the other hand, are composed of light-colored silicate minerals, such as quartz, feldspar, and muscovite. These minerals are high in silica and low in magnesium and iron. As a result, felsic rocks are less dense and lighter than mafic rocks. Felsic rocks often form in more explosive volcanic eruptions, while mafic rocks form in quieter eruptions. Finally, felsic rocks tend to have a light-colored or white appearance, while mafic rocks are typically dark gray or black.
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when 1-bromopropane is exposed to magnesium, followed by ethylene oxide, and then aqueous acid, what is the resulting product?
When 1-bromopropane is subjected to magnesium, 1-pentanol results, which is then followed by ethylene oxide and aqueous acid.
A Grignard reagent is created when 1-bromopropane reacts with magnesium to begin the process. Then, the ethylene oxide and the Grignard reagent combine to create an intermediary molecule. Aqueous acid is then used to transform this intermediate chemical into 1-pentanol.
To turn alkenes into alcohols, a technique known as the "Wacker oxidation" or "Wacker process" is utilized. It is significant to remember that Wacker oxidation is a multi-step procedure that calls for particular reagents and circumstances in order to be properly carried out. To produce the desired product, the reaction must be carried out in an inert environment at high temperatures.
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compete question: when 1-bromopropane is exposed to magnesium, followed by ethylene oxide, and then aqueous acid, what is the resulting product? a.) 2-pentanol b.) 2-methyl-2-pentanol c.) 2-methyl-2-hexanol d.) 1-pentanol
What are the components in cassiterite
Answer:
Minerals and rocks
Cassiterite is a tin oxide mineral (SnO2) and the principal source for tin metal (79.6% Sn). The color is shining black, brownish-black (Fig. 1.34), reddish brown, gray, red, white, and rarely colorless. The crystal system is tetragonal with very common twinning.
Can someone please help me this is Chemistry 1 and I need to know how they got this answer like working out the problems step by step to write on my paper to show that I showed my work.
The energy of the X-ray, given that it has a wavelength of 3.80×10⁻⁶ cm is 5.23×10⁻¹⁸ J (Last option)
How do I determine the energy of the X-ray?We'll begin by obtaining the frequency of the X-ray. Details below:
Wavelength (λ) = 3.80×10⁻⁶ cm = 3.80×10⁻⁶ / 10² = 3.80×10⁻⁸ mSpeed of x-ray (v) = 3×10⁸ m/sFrequency (f) =?Velocity (v) = wavelength (λ) × frequency (f)
3×10⁸ = 3.80×10⁻⁸ × frequency
Divide both sides by 3.80×10⁻⁸
Frequency = 3×10⁸ / 3.80×10⁻⁸
Frequency = 7.89×10¹⁵ Hertz
Finally, we shall determine the energy of the X-ray. Details below:
Frequency (f) = 7.89×10¹⁵ HertzPlanck's constant (h) = 6.626×10⁻³⁴ JsEnergy of x-ray (E) = ?Energy (E) = Planck's constant (h) × frequency (f)
E = hf
E = 6.626×10⁻³⁴ × 7.89×10¹⁵
E = 5.23×10⁻¹⁸ J
Thus, the energy is 5.23×10⁻¹⁸ J (Last option)
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What type of bond holds the atmos in a molecule of methane?
Answer:
Covalent bond
Explanation:
A covalent bond is a type of chemical bond where two or more atoms share electrons in order to form a bond between them. This bond results from the sharing of electrons in order to attain stability and full valence electron shells for each of the atoms involved. Covalent bonds are typically formed between non-metal elements and are known for their strength and stability.
Answer:
Covalent bond
Explanation:
A covalent bond is a type of chemical bond where two atoms share a pair of electrons in order to form a chemical bond. This bond is formed when the electron pair is shared equally between the two atoms, resulting in a stable and strong bond. Covalent bonds are typically found in compounds composed of non-metallic elements, such as oxygen, nitrogen, and carbon. These bonds are important in the formation of molecules and play a key role in biological processes.
