At the same temperature and pressure, balloons of equal volume always contain

a.equal masses of gas.
b.equal numbers of molecules.
c.equal densities of gas.
d.equal numbers of atoms.

The free energy is 6.128 kJ/mol

Free energy, also known as Gibbs free energy, is a thermodynamic quantity used to describe the energy available to do work in a system

The concept of free energy is important in many areas of chemistry, including chemical thermodynamics, biochemistry, and materials science. It is used to understand and predict the behavior of chemical reactions, phase transitions, and other thermodynamic processes.

ΔG = ΔG° + RTlnQ

ΔG = 3.2 * 10^3 + (8.314 * 295 * ln(3.3)

=   3.2 * 10^3 + 2.928 * 10^3

= 6.128 * 10^3 J/mol

or 6.128 kJ/mol

Learn more about free energy:https://brainly.com/question/15319033

#SPJ1

Answer:

\(\boxed {\boxed {\sf 7.89*10^{-4} \ mol \ Pb}}\)

Explanation:

To convert from moles to atoms, we must use Avogadro's Number. Avogadro's Number

1. Set up ratio

We can use Avogadro's Number as a fraction or ratio.

\(\frac{6.022*10^{23} \ atoms \ Pb}{1 \ mol \ Pb}\)

2. Convert atoms to moles

Multiply the given number of atoms by the ratio.

\(4.75 *10^{20} \ atoms \ Pb *\frac{6.022*10^{23} \ atoms \ Pb}{1 \ mol \ Pb}\)

Flip the fraction so that the atoms of lead can cancel each other out.

\(4.75 *10^{20} \ atoms \ Pb *\frac{1 \ mol \ Pb}{6.022*10^{23} \ atoms \ Pb}\)

\(4.75 *10^{20} *\frac{1 \ mol \ Pb}{6.022*10^{23} }\)

\(\frac{4.75 *10^{20} \ mol \ Pb}{6.022*10^{23} }\)

\(7.88774494*10^{-4} \ mol \ Pb\)

3. Round

The original measurement of 4.75 had 3 significant figures (4, 7, and 5).

We must round our answer to 3 sig figs, which is the hundredth place for the number found.

\(7.88774494*10^{-4} \ mol \ Pb\)

The 7 in the thousandth place tells us to round the 8 up to a 9 in the hundredth place.

\(7.89*10^{-4} \ mol \ Pb\)

There are 7.89*10⁻⁴ moles of lead in 4.75*10²⁰ atoms of lead.

Answer:

See attached picture.

Explanation:

Hello.

In this case, since butane has two common occurring structures, n-butane and isobutane, there is a way in which the tert-butyl radical can be formed upon the removal of a hydrogen from the isobutane form of butane as shown on the attached picture, wherein you can see that the radical is named by "tert" since the central carbon is bonded to three carbon atoms, that is why we classify it as tertiary. Moreover, it is a radical due to the presence of the bolded dot next to the tertiary carbon suggesting that it is very likely to bond with an other atom.

Best regards.

The kinetic equation for the given reaction is first-order with respect to the reactant, and the rate constant is zero.

To determine the kinetic equation and rate constant for the given data, we need to analyze the relationship between the concentration of the reactant and time.

The general form of a first-order reaction is given by the equation:

Rate = k[A]^n

Where:

Rate is the rate of the reaction

k is the rate constant

[A] is the concentration of the reactant

n is the order of the reaction with respect to the reactant

By analyzing the given data, we can calculate the reaction rate and determine the order of the reaction and the rate constant.

Let's first calculate the reaction rate using the initial and final concentrations and the corresponding time intervals:

Rate = (Change in concentration) / (Change in time)

For the first time interval (0 to 10 min):

Rate = (13.2 kg·m^(-3) - 16.0 kg·m^(-3)) / (10 min - 0 min) = -2.8 kg·m^(-3)·min^(-1)

Similarly, we can calculate the rates for the other time intervals:

10 to 20 min: Rate = (11.1 kg·m^(-3) - 13.2 kg·m^(-3)) / (20 min - 10 min) = -2.1 kg·m^(-3)·min^(-1)

20 to 35 min: Rate = (8.8 kg·m^(-3) - 11.1 kg·m^(-3)) / (35 min - 20 min) = -2.3 kg·m^(-3)·min^(-1)

35 to 50 min: Rate = (7.1 kg·m^(-3) - 8.8 kg·m^(-3)) / (50 min - 35 min) = -1.7 kg·m^(-3)·min^(-1)

By observing the rates for different time intervals, we can see that the rate of change in concentration does not remain constant. This suggests that the reaction is not first-order with respect to the reactant.

To determine the order of the reaction, we can examine how the rate changes with the concentration. Let's calculate the rate ratios for the different time intervals:

Rate ratio (10/0) = (-2.8 kg·m^(-3)·min^(-1)) / (-2.8 kg·m^(-3)·min^(-1)) = 1

Rate ratio (20/10) = (-2.1 kg·m^(-3)·min^(-1)) / (-2.8 kg·m^(-3)·min^(-1)) ≈ 0.75

Rate ratio (35/20) = (-2.3 kg·m^(-3)·min^(-1)) / (-2.1 kg·m^(-3)·min^(-1)) ≈ 1.10

Rate ratio (50/35) = (-1.7 kg·m^(-3)·min^(-1)) / (-2.3 kg·m^(-3)·min^(-1)) ≈ 0.74

By observing the rate ratios, we can see that they are not constant, indicating that the reaction is not a simple integer order (e.g., first-order or second-order). However, we can approximate the order of the reaction by calculating the average rate ratio:

Average rate ratio = (1 + 0.75 + 1.10 + 0.74) / 4 ≈ 0.897

The order of the reaction can be approximated as the exponent that gives this average rate ratio. In this case, the order is approximately 0.897, which we can round to 1. Therefore, the kinetic equation for the reaction is:

Rate = k[A]^1.5

Now, to determine the rate constant (k), we can choose any set of data points and solve for k. Let's use the first data point at time = 0 min:

16.0 kg·m^(-3) = k * (0 min)^1.5

Since (0 min)^1.5 is zero, the right side of the equation is zero. Therefore, k must be zero as well.

For more such questions on kinetic equation visit;

https://brainly.com/question/22855016

#SPJ8

First, we need to write out the balanced chemical equation for the reaction: 4 KO2 + 2 CO2 → 2 K2CO3 + 3 O2

From the equation, we can see that 4 moles of KO2 react with 2 moles of CO2 to produce 3 moles of O2. Therefore, we need to convert the given masses of KO2 and CO2 into moles:

moles of KO2 = 2.61 g / molar mass of KO2 = 2.61 g / 71.10 g/mol = 0.0367 mol
moles of CO2 = 4.46 g / molar mass of CO2 = 4.46 g / 44.01 g/mol = 0.1013 mol

Next, we need to determine the limiting reagent (the reactant that will be completely consumed in the reaction) by comparing the mole ratios of KO2 and CO2 in the balanced equation. The ratio of moles of KO2 to moles of CO2 is:
0.0367 mol KO2 / 4 mol KO2 per 2 mol CO2 = 0.0184 mol CO2

Since this ratio is less than the actual number of moles of CO2 we have (0.1013 mol), CO2 is in excess and KO2 is the limiting reagent.

Using the mole ratio from the balanced equation, we can calculate the number of moles of O2 produced:

moles of O2 = 3 mol O2 per 4 mol KO2 × 0.0367 mol KO2 = 0.0275 mol O2

Finally, we can convert the moles of O2 to grams:

mass of O2 = moles of O2 × molar mass of O2 = 0.0275 mol × 32.00 g/mol = 0.88 g
Therefore, 2.61 g of KO2 and 4.46 g of CO2 would produce 0.88 g of O2.

For more questions on: chemical

https://brainly.com/question/29886197

#SPJ11

Answer:

Protons, neutrons, and electrons

Explanation:

Both protons and neutrons have a mass of 1 amu and are found in the nucleus. However, protons have a charge of +1, and neutrons are uncharged. Electrons have a mass of approximately 0 amu, orbit the nucleus, and have a charge of -1.

Answer:

its a gas

Explanation:

Hydrogen  is the chemical element in the periodic table that has the symbol H and atomic number 1. At standard temperature and pressure it is a colorless, odorless, non-metallic, univalent, highly flammable diatomic gas. Hydrogen is the lightest and most abundant element in the universe.

In the given question, the state of matter of Hydrogen is gas in nature.

A state of matter is one of the four distinct forms in which matter can exist as solid, liquid, gas, and plasma.

Hydrogen is a chemical element that occurs naturally as a gas at standard temperature and pressure (STP). It is the lightest and most abundant element in the universe and is found in stars, gas giants, and other celestial bodies.

It is also used in various industrial processes, such as the production of ammonia and methanol, and as a fuel source in fuel cells.

Therefore, hydrogen is in the gaseous state at room temperature and normal atmospheric pressure.

Learn more about State of matter here:

https://brainly.com/question/9402776

#SPJ6

Answer:

Evaporation occurs because among the molecules near the surface of the liquid there are always some with enough heat energy to overcome the cohesion of their neighbors and escape. At higher temperatures the number of energetic molecules is greater, and evaporation is more rapid.

Answer:criminal behavior

Explanation:

Edge 2021

Answer:

Criminal Behavior

Explanation:

One mile of He atoms has a bigger mass than one mole of H atoms because there are 2.406 × 10²⁶ He atoms compared to 6.022 × 10²³ H atoms.

We can observe that there are roughly twice as many hydrogen atoms as helium atoms. As a result, due to the fact that hydrogen is a diatomic molecule and therefore exists in a gaseous state, there are twice as many atoms in one mole of hydrogen gas as there are in one mole of helium gas.

This can be computed using the formula:

1 mile = 1609.34 meters.

1 mile of He atoms = (4 grams/mol) x (1609.34 meters/4.0026 grams) x (6.022 × 10²³ atoms/mol) =  2.406 × 10²⁶ atoms.

1 mole of H atoms = 1 gram/mol × (atoms/mol) = atoms.

To know more about atoms visit:-

brainly.com/question/30898688

#SPJ1

This problem is providing information about the states of matter and a given diagram showing a molecular arrangement it has. Thus, we can start off by analyzing the attached file, which shows molecular arrangements and movements each state exhibits.

Solids are quite organized so that they are able to form molecular networks in which molecules vibrate but do not displace anywhere. Liquid molecules are close enough to have small movements and vibrations but are not able to form any organized network.

Gases, however, exhibit no molecular organization but large movements inside the container whose walls the gas constantly crash against. Plasma do not have any order neither yet it contains ions.

In such a way, since the given diagram do not have any apparent order or ion, we infer this is about a gas that moves into the container and crash against its walls.

Learn more:

Answer

C. both

Explanation

Structures in option A and option B both corresponds to the name: pentanoic acid.

The correct answer is C. both

The correct sequence in this case would be-

To know more about molar mass here

https://brainly.com/question/24236159

#SPJ4

The final pressure of the gas, when its volume is increased from 3.4 L to 4.0 L at a constant temperature, is approximately 2.55 atm.

To determine the final pressure of a gas when its volume is changed while its amount and temperature remain constant, we can use Boyle's law. Boyle's law states that the pressure of a gas is inversely proportional to its volume at constant temperature.

Mathematically, Boyle's law can be expressed as:

P1 * V1 = P2 * V2

Where:

P1 = Initial pressure

V1 = Initial volume

P2 = Final pressure

V2 = Final volume

In this case, we are given:

P1 = 3.0 atm

V1 = 3.4 L

V2 = 4.0 L

We need to find P2, the final pressure.

Rearranging the formula, we have:

P2 = (P1 * V1) / V2

Substituting the values we have:

P2 = (3.0 atm * 3.4 L) / 4.0 L

P2 = 10.2 atm / 4.0 L

Calculating P2:

P2 = 2.55 atm

Therefore, the final pressure of the gas, when its volume is increased from 3.4 L to 4.0 L at a constant temperature, is approximately 2.55 atm.

Boyle's law demonstrates the inverse relationship between pressure and volume for a gas at a constant temperature. As the volume increases, the pressure decreases, and vice versa, as long as the amount and temperature of the gas remain constant.

For more such questions on pressure visit:

https://brainly.com/question/24719118

#SPJ11

Answer:

1.05 mol

Explanation:

Step 1: Given data

Step 2: Calculate the moles of sulfuric acid (n)

We will use the following expression.

M = n/V

n = M × V

n = 1.325 mol/L × 0.395 L = 0.523 mol

Step 3: Calculate the moles of H⁺

H₂SO₄ dissociates completely according to the following equation.

H₂SO₄ ⇒ 2 H⁺ + SO₄²⁻

The molar ratio of H₂SO₄ to H⁺ is 1:2. The moles of H⁺ are 2/1 × 0.523 mol = 1.05 mol.

Answer:

Explanation:

2 Li₃(PO₄) + 3Sr(OH)₂ = Sr₃(PO₄)₂ (s) + 6LiOH

precipitate of strontium phosphate is formed.

The molecular equation for the reaction between aqueous solutions of strontium hydroxide and lithium phosphate is;

First, we must identify the reactants and the products formed in the chemical reaction.

According to the question:

The reaction between the reactants above yields; Lithium hydroxide, LiOH and Strontium phosphate, Sr₃(PO₄)₂.

The balanced chemical equation is therefore;

The Strontium phosphate, Sr₃(PO₄)₂ is precipitated out of solution and exists as a solid.

Read more:

https://brainly.com/question/16887565

Complete Question is attached below

We have that the Chemical is

Salt

From the Question we have options

Salt

Sleep

Sold

Heat

Temperature

Generally among est the options

Salt is the only chemical present as it is made of Sodium and chlorine compound

NaCl joined by an ionic bond

For more information on this visit

https://brainly.com/question/1689737?referrer=searchResults

Answer

1. 2 Cu + 1 O₂ 2 CuO

a. 1.59 moles CuO

b. 2.625 moles O₂

c. 4.88 moles CuO

Explanation

(1) The balanced equation will be

2 Cu + 1 O₂ 2 CuO

(a) If 101 grams of copper is used, how many moles of copper (II) oxide will be formed?

From the reaction;

2 moles Cu produced 2 moles CuO

Molar mass of Cu = 63.546 g/mol

Molar mass of CuO = 79.545 g/mol

That implies;

(2 mol x 63.546 g/mol) = 127.092 g Cu produced (2 mol x 79.545 g/mol) = 159.09 g CuO

Therefore, 101 g Cu will produce

Therefore the mole of CuO produced = 126.43/79.545 = 1.59 moles

(b) If 5.25 moles of copper are used, how many moles of oxygen must also be used?

From the reaction;

2 moles Cu react with 1 mole O2

Therefore, 5.25 moles Cu will react with

Hence, 2.625 moles of oxygen must be used.

(c) If 78.2 grams of oxygen react with copper, how many moles of copper (II) oxide will be produced?

First, convert 78.2 grams of oxygen to moles using the mole formula.

Molar mass of O₂ = 31.998 g/mol

So,

The final step is to use the mole ratio in the balanced equation to determine the mole of CuO that will be produced.

From the equation;

1 mole of O₂ produces 2 moles of CuO

2.44 moles O2 will now produce (2.44 moles x 2) = 4.88 moles of CuO

Therefore, 4.88 moles of CuO will be produced

Answer:

Cyanide and thiamine do not possess specific structural features that enable them to directly catalyze the benzoin condensation reaction. However, they can participate in the catalytic process indirectly by forming complexes with other compounds or enzymes.

1. Cyanide: Cyanide ions (CN-) can act as a nucleophile, attacking the carbonyl group of aldehydes or ketones. This nucleophilic attack forms a cyanohydrin intermediate, which can undergo subsequent reactions to produce various compounds. In the benzoin condensation, cyanide can react with benzaldehyde to form a cyanohydrin, which can then undergo self-condensation to yield the benzoin product.

2. Thiamine: Thiamine, also known as vitamin B1, is not directly involved in catalyzing the benzoin condensation. However, thiamine pyrophosphate (TPP), the active form of thiamine in enzymatic reactions, can play a role. TPP is a cofactor found in enzymes called transketolases. Transketolases facilitate the transfer of two-carbon units between ketose and aldose sugars. While this is different from the benzoin condensation, the presence of TPP in the enzyme active site allows it to facilitate certain carbon-carbon bond-forming reactions.

Explanation:

It's worth noting that these examples describe the indirect involvement of cyanide and thiamine in facilitating reactions related to the benzoin condensation. Other catalysts, such as base compounds (e.g., sodium hydroxide) or other thiamine derivatives, may be used more commonly for direct catalysis of the benzoin condensation.

The following statement which is NOT true about the lens is:

The lens is a piece of glass which  is used for the dispersal or refraction of light and is used to focus light onto the retina of the eye.

As a result of this, the lens is responsible for refracting of light, focusing of light and it is transparent. However, it does not send light to the optic nerve.

Therefore, the correct answer is option A

Read more here:

https://brainly.com/question/23730298

Explanation:

Carbon-14 has a half life of 5730 years, meaning that 5730 years after an organism dies, half of its carbon-14 atoms have decayed to nitrogen atoms. Similarly, 11460 years after an organism dies, only one quarter of its original carbon-14 atoms are still around.

Answer:

0.68g/ml

Explanation:

The density of an object is its mass per unit volume. It is calculated using the formula

Density = mass / volume

Mass of stopper weighed = 4.8g

The volume of stopper can be got by subtracting the (volume of water) from the (volume of water+stopper) i.e.

= 39.2ml - 32.1ml

= 7.1ml

Volume of stopper = 7.1ml

Density of stopper= 4.8/7.1

Density= 0.676056

Therefore, the density of the stopper is 0.68g/ml

It is observed that the boiling point and molecular forces interact. Boiling points are a way to quantify molecular forces. Molecular forces will grow if we increase the polarization of bonds.

It is possible to raise the boiling point of a substance by increasing its molecular weight. When a liquid's vapour pressure reaches its surrounding pressure and the liquid turns into a vapour, this temperature is known as the substance's boiling point. Depending on the pressure in the environment, a liquid's boiling point can change.

An molecular forces is an attractive force that develops between the protons or positive parts of one molecule and the electrons or negative parts of another molecule. various chemical and physical characteristics.

Learn more about molecular forces here

https://brainly.com/question/24215119

#SPJ4

Explanation:

Ideal Gas Law

PV = n R T

V = n R T / P     n = moles    R = gas constant = .082057   L atm / ( K mol)

                         T is in Kelvin

V =  .25 moles * .082057 * (273.15 + 57) K / .82 atm = 8.3 moles

   ( two Sig Dig)

Explanation:The unit is -

o

I

I hope it helped you.

A Brainliest please.

ASK for more

The activated complex in the following reaction is: FeCuSO4. The activated complex is a transition state that is an intermediate structure in a chemical reaction. Option C)

An activated complex is a structure that exists temporarily during a chemical reaction and corresponds to the top of the energy barrier that must be overcome for the reaction to proceed to completion.

The activated complex in the following reaction is: FeCuSO4. The activated complex is a transition state that is an intermediate structure in a chemical reaction. It is the structure with the greatest energy within the reaction process and is used to determine the rate at which the reaction occurs. An activated complex exists when the energy required to break the old bonds and form new ones has been absorbed. It has a specific configuration and energy content that is precisely defined.

A chemical reaction is the process by which atoms or groups of atoms in molecules interact to form new molecules. A chemical reaction is caused by the motion of electrons, which are negatively charged particles that surround atomic nuclei. The reaction proceeds through the formation of an intermediate species known as the transition state or activated complex. Reaction mechanisms are the sequence of steps involved in a chemical reaction. These steps describe the intermediate species formed as the reactants are converted to products. Hence option C) is correct.

for more questions on reaction

https://brainly.com/question/25769000

#SPJ8

The angles as shown are supplementary angles because the add up to 180 degrees.

Two angles are said to be supplementary if they add up to 180 degrees. Now we know that the sum of angles on  straight line is 180 degrees. If we look at the image as shown in the image attached, we can see that the angles lie on a straight line.

As such, we can conclude that the angles as shown are supplementary angles because the add up to 180 degrees.

Learn more about supplementary angles:https://brainly.com/question/13045673

#SPJ1

Answer:

My school  has no stationary and my teacher has no stationary

Explanation:

cuz i am smart duh