what are the steps of the election process in order )?

wThe question requires us to define the ways the volume of a baloon can be increased, considering number of molecules of air, temperature and pressure.

To answer this question, we must analyze the ideal gas law, which can be written as:

where P is the pressure of the system, V is its volume, n is the number of moles, R is a constant (constant of gases) and T refers to the temperature of the system.

We can rearrange this equation to analyze the effect of P, n and T over V:

Looking at the equation, we can note that temperature (T) and number of moles (n) are directly proportional to volume (V), while pressure (P) is inversely proportional.

This means that increasing / decreasing the number of moles or the temperature of the system will increase / decrease the volume, while increasing the pressure will decrease the volume (and decreasing the pressure will increase volume):

Considering the information above, we can answer the question as it follows:

• increasing the number of air molecules in the balloon

• increasing the temperature of the balloon

• decreasing the pressure on the balloon

Acetinilide is recrystallized using water as a solvent since it has a much higher solubility in hot water than in cold water. the purified solid will not recrystallize later in the experiment if high amount of hot solvent is added in the beginning. So we need to dissolve the sample in minimum amount of boiling water

What is  recrystallizing  ?

A purification method called recrystallization is used to get rid of contaminants from a sample. The impure sample is dissolved in an ethanol- or water-based solvent. The material dissolves in the liquid solvent after some brief heating. The solid precipitates out of the solution when the solvent cools down once more, leaving the impurities in the solvent that are still dissolved behind.

Then activated charcoal is added to remove the coloured impurities. After hot film pareshan insoluble impurities are removed. And then cold filtration separates the solid from solution.

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Argon, Neon and Krypton will  react the same.

Nobles gases are generally non reactive gases. in some specific condition krypton react with fluorine and form a solid . xenon react with oxygen and fluorine and form number of compounds. only helium and neon are inert gases. in general noble gases are least reactive. They have high ionization enthalpy and more positive electron gain enthalpy.

Argon is colorless and unreactive gas. Neon is also colorless and unreactive gas. Krypton is also a gas with no color and it does not react with other.

Thus, Argon , Neon and Krypton will react the same.

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Answer: The nebular theory is an explanation for the formation of solar systems.

Explanation:

The percentage composition of Pb and Cl₂ is 74.5% and 25.5% respectively in PbCl₂.

A simple concept is percent composition. The mass percentage of each element in a compound is indicated by its percent composition. The fusion of two or more elements results in a chemical compound.

If you are researching a chemical compound, you might be interested in learning what percentage of that compound contains a particular element. (Mass of Element/Molecular Mass) x 100 is the formula for percent composition.

The mass of Pb is 207.2

The mass of Cl2 is 70.906, since the mass is 35.453 and we have two of them.

When we add it together, the total mass of PbCl2 is 278.106, all we need to do is add the two masses we calculated before, together!

The formula for percent composition is:

[tex]\frac{element\\mass}{compound\\mass} \times 100[/tex]

Lets calculate the percentage of Pb

(207.2/278.106) × 100

= 74.5%

The percentage compositions of Pb is 74.5%

Lets calculate the percentage of Cl₂

(70.906/278.106) × 100

= 25.5%

Thus, the percentage composition of Pb and Cl₂ is 74.5% and 25.5% respectively in PbCl₂

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Answer: Red 40 my brother

Explanation:

The volume of a 14.00g of nitrogen at 5.64atm and 315K is 4.59L.

The volume of an ideal gas can be calculated using the following ideal gas equation formula;

PV = nRT

Where;

An ideal gas is a hypothetical gas, whose molecules exhibit no interaction, and undergo elastic collision with each other and with the walls of the container.

The number of moles in 14g of nitrogen can be calculated as follows:

moles = 14g ÷ 14g/mol = 1mol

5.64 × V = 1 × 0.0821 × 315

5.64V = 25.86

V = 25.86 ÷ 5.64

V = 4.59L

Therefore, 4.59L is the volume of the gas

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A scientist proposes that an iron bar be divided into smaller and smaller pieces it is right to infer that during this process, the process produces, the smallest piece of the iron (Option A)

Iron has the chemical symbol Fe and the atomic number 26. It is a metal from the periodic table's first transition series and group 8. It is the most common element on Earth by mass, just ahead of oxygen, and makes up much of the Earth's outer and inner core.

Alloy steels, such as carbon steels, are made using iron plus additions such as nickel, chromium, vanadium, tungsten, and manganese. Bridges, power pylons, bicycle gears, cutting tools, and rifle barrels are all made from them. Carbon content in cast iron ranges from 3-5%. It is utilized in the manufacture of pipes, valves, and pumps.

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The strength of force that you use to move a tennis ball a short distance is option d: weak .

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Therefore, The word "force" has a specific meaning in science. At this level, calling a force a push or a pull is entirely appropriate. A force is not something an object "has in it" or that it "contains."

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See full question below

Q.

What strength of force do you use to move a tennis ball a short distance?

answer choices

large

medium

strong

weak

The evaporation of water from your skin is an example of an endothermic reaction because heat is lost from the body as the water evaporates from the skin.

Based on the heat changes that occur in reaction, reactions can be classified into two types;

Exothermic reactions are reactions in which the heat content of the reactants is greater than the heat content of the products. Hence, heat is given out during the reaction. An example is the dissolution of acids in water.

Endothermic reactions are reactions in which the heat content of the reactants is less than the heat content of the products. Hence, heat is absorbed during the reaction. An example is the evaporation of water from the skin.

Other types of endothermic reactions are the melting of ice and thermal decomposition.

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Answer:

False

Explanation:

It is False because in a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

The concentration of the solution will be 0.2 M.

Given information,

Initial Volume [V1] = 25 ml

Initial Volume in litre = 25/1000 L

                                   = 0.025 L

Initial Concentration [M1] = 6 M

Final Volume [V2] = 750 ml

Final Volume in litre = 750/1000 L

                                   = 0.75 L

Let final Concentration = [M2]

Using the dilution equation, that is

Initial Molarity x Initial Volume = Final Molarity x Final Volume

M1 x V1 = M2 x V2

6 x 0.025 = M2 x 0.75

0.15 = 0.75M2

∴ M2 = 0.2 M

Therefore the concentration of the solution after the dilution process is 0.2M compared to the initial 6M HCl.

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Taking into account the reaction stoichiometry and ideal gas law, the mass of NaCl that reacted with F₂ at 280 K, 15 L and 1.50 atm is 114.56 grams; and if you have the same volume of fluorine gas at STP, the mass of NaCl reacted is 78.323 grams.

In first place, the balanced reaction is:

F₂ + 2 NaCl  → Cl₂ + 2 NaF

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of gases:

P×V = n×R×T

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

You know for F₂:

Replacing in the definition of ideal gas law:

1.50 atm× 15 L = n× 0.082 (atm×L)÷(mol×K)× 280 K

Solving:

(1.50 atm× 15 L)÷ (0.082 (atm×L)÷(mol×K)× 280 K)= n

0.979965 moles= n

Then the following rule of three can be applied: if by stoichiometry of the reaction 1 mole of F₂ reacts with 116.9 grams of NaCl, 0.979965 moles of F₂ reacts with how much mass of NaCl?

mass of NaCl= (0.979965 moles of F₂× 116.9 grams of NaCl)÷ 1 mole of F₂

mass of NaCl= 114.56 grams

Finally, the mass of NaCl reacted is 114.56 grams.

In this case, you have the same volume of fluorine gas at STP:

Replacing in the definition of ideal gas law:

1 atm× 15 L = n× 0.082 (atm×L)÷(mol×K)× 273 K

Solving:

(1 atm× 15 L)÷ (0.082 (atm×L)÷(mol×K)× 273 K)= n

0.67 moles= n

Then the following rule of three can be applied: if by stoichiometry of the reaction 1 mole of F₂ reacts with 116.9 grams of NaCl, 0.67 moles of F₂ reacts with how much mass of NaCl?

mass of NaCl= (0.67 moles of F₂× 116.9 grams of NaCl)÷ 1 mole of F₂

mass of NaCl= 78.323 grams

Finally, the mass of NaCl reacted is 78.323 grams.

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For a fish to completely decompose if there were no decomposers, it takes few days to more than a week.

Decomposers are living organisms like fungi and bacteria. These decomposers are heterotrophic which means they must take the nutrients and it cannot make its own food. Decomposers play an eminent role in an ecosystem because of their process of nutrition.

They break down the dead plants and the animals. These break down the waste of the organisms. They are very eminent for all the ecosystem. If these were not in the ecosystem, the plants cannot get essential nutrients, dead matter and waste would deposit. So the nutrients in them gets recycled back so that they can be used again.

When fish dies, there is nothing which is ingested and the bladder air starts to release, which causes the fish to sink to the bottom. After few days, the internal organs of the dead fish gets decomposed, after which a gas is formed.

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100 mmol of sodium hydroxide are consumed in this reaction.

What is titration ?

A titration is a method for figuring out the concentration of an unknown solution by using a solution with known concentration. Until the reaction is finished, the titrant (the known solution) is typically added from a buret to a known volume of the analyte (the unknown solution). The concentration of the unknown can be determined by knowing the amount of titrant that was added. An indicator is frequently used to indicate the reaction's endpoint or end of the reaction.

Titration, also known as titrimetry, is a common quantitative chemical analysis technique used in labs to determine the unknown amount of an analyte (Medwick and Kirschner, 2010). Due to its reliance on volume measurements, titration is frequently referred to as volumetric analysis. The reagent known as the titrant or titrator is made into a standard solution. A solution of the analyte or titrand reacts with a titrant that has a known concentration and volume to determine concentration. The volume of the titrant that has responded is the titration volume. Titrations can take many different shapes and have different processes and goals. The two most common kinds of qualitative titrations are redox and acid-base titrations.

Convert molarity into number of mols:

HCl + NaOH = H2O + NaCl 100 mmol of NaOH are consumed in the process for every mol of hydrochloric acid ingested (33 mL x 3M = 100 mmol).

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According to the given statement HSO₄ is the empirical formula of a compound.

Empirical formulae are beneficial since figuring out the molecular formula can be immensely aided by knowing the relative amounts of each constituent in a molecule. Obtaining an n-value is crucial in order to establish the actual number of atoms in a molecule.

Hydrogen = 2 g

Sulphur (S) = 32 g

Oxygen (O) = 64 g

We know, molecular weight of the elements:

H = 2 g/mol

S = 32 g/mol

O = 16 g/mol

This allows us to calculate how many moles there are for each element.

⇒ Moles

= Weight (g) / Molecular weight (g/mol)

For Hydrogen:

⇒ Moles of H = 2/2

⇒ Moles of H = 1 mol

For Sulphur:

⇒ Moles of S = 32/32

⇒ Moles of S =1 mol

For Oxygen:

⇒ Moles of O = 64/16

⇒ Moles of O = 4 mol

To determine the empirical formula, we shall divide the element with the fewest moles by the other elements' moles.

Here, the smallest moles are of Hydrogen and Sulfur i.e. 1 mol

⇒ H = 1/1

⇒ H = 1

⇒ S = 1/1

⇒ S = 1

⇒ O = 4/1

⇒ O = 4

⇒ Empirical formula = HSO₄

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Answer: The correct answer is H2SO4. the other guy is wrong.

Explanation: First, you must convert grams to moles using the molar mass of each element.

2 g H×1 mole H1.008 g H=2 moles H32 g S×1 mole S32.006 g S=1 mole S64 g O×1 mole S15.99 g O=4 mole O

Second, you divide your calculated moles by the smallest mole to get whole-number ratios. Since Sulfur (S) has the smallest amount of moles (1) we will divide by that number.

H=21=2S=11=1O=41=4

So your final answer is H2SO4.

First, remember that:

The vapor pressure of a liquid is directly related to the intermolecular forces present between its molecules. If these forces are stronger, the evaporation rate and the vapor pressure will be lower.

So, we're going to analyze the intermolecular forces of each element:

O2: The molecule of oxygen consist of two oxygen atoms bonded together by a double bond. It consist of just London dispersion forces, so this is a really weak force.

H2O: Water has hydrogen bonds, dipole-induced dipole forces, and London dispersion forces. So it has strong forces.

SO: It consists of London dispersion forces, and there's a difference of electronegativity between S and O, so there's a greater force than the force of O2.

Therefore, O2 could have the highest vapor pressure, as its intermolecular forces are the weakest.

The value of the Q-system is Zero.

The Q-System is a rock mass classification system related to the stability of underground openings. Q-System was originally developed at NGI and is widely used in Norway and internationally. service. The Q value of undisturbed mountains can fluctuate. The Q-System is a rock mass classification system related to the stability of underground openings.

Based on the estimation of six rock parameters the Q value of rocks can be calculated. This value represents the quality of the rock. Rock quality designation RQD is a rough measure of the degree of fracturing or fracturing of rock masses measured as the percentage of drill cores that are 10 cm or longer in length. High-quality rocks have an RQD greater than 75% and low-quality rocks less than 50%. There are several definitions of lithology designation RQD.

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All the pair of words given have the same relation as chemist has with matter.

Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of same type.

Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.

The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.

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Answer: Astronomer: Space

Explanation:

K12 2.18 Unit Test

The equation that corresponds to the formation of liquid water is:

H₂ (g)  +  1/2 O₂ (g)  [tex]\longrightarrow[/tex] H₂O (l)

Standard enthalpy of formation can be defined as the enthalpy change when 1 mole of a compound is produced from its elements in their most stable state of aggregation at a temperature of 298.15 K and pressure of 1 atm.

Enthalpy of formation is the standard enthalpy of reaction where two or more reactants combine together to form one mole of the product. The standard enthalpy of formation is measured in units in kilojoule per mole (kJ/mol), joule per mole, or kilocalorie per gram.

All elements in their standard states such as oxygen gas, solid carbon (graphite) have a standard enthalpy of formation of zero.

The water formation reaction has a negative value of the standard enthalpy of formation indicating that the formation of water is an exothermic reaction. One mole of water is formed from the reaction of one mole of hydrogen gas and a half mole of oxygen gas.

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Concentration of A increases and Concentration of HA decreases.

The buffer solution, a water-based solvent solution, is created by combining a weak acid and its conjugate base, or a weak base and its conjugate acid. They can be diluted or have small amounts of acid or alkali added to them without the pH of the solution altering.

If small amount of OH⁻ is added to a buffer solution containing A and HA, this added OH⁻ will react

with the HA in following way,

HA + OH = A + H₂O

as a result more amount of A will generate and along with that amount of HA will decrease.

Hence we can say,

Concentration of A increases and Concentration of HA decreases . OPTION B is correct.

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Protons (the number on the right of calcium-40 represents number of protons). The tiniest component of ordinary matter, an atom, makes up a chemical element.

Neutral or ionized atoms make up every solid, liquid, gas, and plasma. Atoms typically have a diameter of 100 picometers or less. Due to quantum effects, they are so small atoms that it is impossible to precisely anticipate their behavioral using traditional physics, as if they were tennis balls, for example.

The positively charged particles called protons are found in the hydrogen atom's nucleus. Protons, electrons, and neutrons are the building blocks of an atom. An atom's nucleus, which is located in the middle, contains all of its mass.

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When you are close to tobacco smoke sources, you may unintentionally breathe in secondhand smoke, often known as passive smoking.

For instance, you might interact with smokers at events or gatherings where smoking is permitted. Even though you might not notice any changes, secondhand smoke exposure can be harmful to your health.

It's not simply uncomfortable for your friends and family when they inhale your secondhand smoke; this is what we refer to as passive smoking. It can also be harmful to their health.

Regular secondhand smoke exposure increases the risk of developing heart disease and lung cancer, two diseases that smokers are more prone to develop.

Smoking tobacco products both actively and passively as well as exposure to some hazardous chemicals are the two main causes of lung cancer. Smoking tobacco most certainly causes respiratory issues, mouth and lung cancer, and both.

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Box has more acceleration as compared to the refrigerator because of more weight of a refrigerator.

Acceleration is defined as the process where the velocity of a body changes. Velocity is the combination of speed and direction. For getting acceleration, a change in speed or change in direction or change occurs in both. There are three types of acceleration i.e. uniform acceleration, non-uniform acceleration, and average acceleration. Uniform acceleration is the motion of an object that travels in a straight line with an increase in velocity at equal intervals of time. The main difference between the acceleration of the box and the refrigerator is that the mass of the box is lower than the refrigerator because of more weight of the refrigerator than the box.

So we can conclude that box has less weight as compared to the refrigerator which leads to more acceleration of the box.

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Answer: It is Neutron

Explanation:

²⁷₁₃Al + ⁴₂α = ³⁰₁₅P + ?

27 + 4 = 30 + M

31 = 30 + M

-30  -30

1 = M

13 + 2 = 15 + Z

15 = 15 + z

-15 = -15

0 = z

¹₀n

Answer:  The correct answer is 72.0726, so you have chosen correctly!

Explanation:

The carbon weight of C14 is 168g

The total mass (molar weight) of C14H19NO2 is 233g

Therefore, the percent carbon would be 168/233 = 0.721 or 72.1%

The kind of bond they will form is an ionic bond where one beryllium atom will donate electrons to two chlorine atoms (option A).

Ionic bond is a type of chemical bond where two atoms or molecules are connected to each other by electrostatic attraction.

Ionic bonds are formed by atoms with opposite charges i.e. negative (-) and positive (+) charge. The metal is usually positively charged while the nonmetal is usually negatively charged.

According to this question, the molecule beryllium chloride has one beryllium atom, a metal, and two chlorine atoms, nonmetals. This means that an ionic bond will be formed by beryllium atom and chlorine atom.

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The amount of matter that makes up a physical body is known as its mass. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this property. The gravitational pull an object has on other bodies is also determined by its mass. The kilogram serves as the SI's fundamental unit of mass.

The substance's density is defined as its mass per unit of volume. Although the Latin letter D can also be used, the most common symbol for density is.

The amount of three-dimensional space that is occupied is measured by volume. It is frequently expressed quantitatively using SI-derived units or different imperial units. Volume and the notion of length are connected.

The mass of an object divided by its volume is the formula for determining density. Mathematically, this is represented as d = m/v, where d stands for density, m for mass, and v for object volume. The common measurements are kg/m3.

Using, d = m/v

m = d * v

m = 8 * 5 = 40 g/cm³

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