how many molecules are in 3.40L of H2O vapor at STP?*

Using the Clausius-Clapeyron equation, the vapor pressure of carbon disulfide (CS₂) at 35 °C is approximately 1.155 atm.

The Clausius-Clapeyron equation is given by:

ln(P2/P1) = (-ΔHvap/R) x (1/T2 - 1/T1)

Where:

P1 = Vapor pressure at temperature T1

P2 = Vapor pressure at temperature T2

ΔHvap = Enthalpy of vaporization

R = Gas constant (8.314 J/(mol·K))

T1 = Initial temperature in Kelvin

T2 = Final temperature in Kelvin

To solve the problem, we need to convert the given values to the appropriate units and substitute them into the equation.

Given:

Normal boiling point (T1) = 46.3 °C

Enthalpy of vaporization (ΔHvap) = 26.8 kJ/mol

Temperature (T2) = 35 °C

Step 1: Convert temperatures to Kelvin

T1 = 46.3 °C + 273.15 = 319.45 K

T2 = 35 °C + 273.15 = 308.15 K

Step 2: Convert enthalpy of vaporization to J/mol

ΔHvap = 26.8 kJ/mol x 1000 J/kJ = 26,800 J/mol

Step 3: Substitute the values into the Clausius-Clapeyron equation and solve for ln(P2/P1)

ln(P2/P1) = (-ΔHvap/R) x (1/T2 - 1/T1)

ln(P2/P1) = (-26,800 J/mol / (8.314 J/(mol·K))) x (1/308.15 K - 1/319.45 K)

Step 4: Calculate ln(P2/P1)

ln(P2/P1) = (-3227.17) x (-0.000045)

Step 5: Solve for P2/P1

P2/P1 = \(e^{ln(P2/P1)}\)

P2/P1 = (\(e^{-3227.17 X -0.000045}\))

Step 6: Calculate P2 by multiplying P1 with P2/P1

P2 = P1 x (P2/P1)

Note: P1 is the vapor pressure at the boiling point (46.3 °C), which is 1 atm (atmospheric pressure).

P2 = 1 atm x (P2/P1)

Substitute the calculated value of P2/P1 from step 5 into the equation to find P2.

Let's perform the calculations step by step:

Given:

T1 = 46.3 °C = 319.45 K

ΔHvap = 26.8 kJ/mol = 26,800 J/mol

T2 = 35 °C = 308.15 K

R = 8.314 J/(mol·K)

Step 1: Calculate ln(P2/P1)

ln(P2/P1) = (-ΔHvap/R) x (1/T2 - 1/T1)

ln(P2/P1) = (-26,800 J/mol / (8.314 J/(mol·K))) x (1/308.15 K - 1/319.45 K)

ln(P2/P1) = (-3227.17) x (-0.000045)

ln(P2/P1) = 0.145

Step 2: Solve for P2/P1

P2/P1 = \(e^{ln(P2/P1)}\)

P2/P1 = (\(e^{-3227.17 X -0.000045}\))

P2/P1 = \(e^{0.145}\)

P2/P1 = 1.155

Step 3: Calculate P2

P2 = P1 x (P2/P1)

P2 = 1 atm x (1.155)

P2 = 1.155 atm

Therefore, the vapor pressure of carbon disulfide (CS₂) at 35 °C is approximately 1.155 atm.

The correct question is:

The normal boiling point of carbon disulfide (CS₂) is 46.3 °C. Its enthalpy of vaporization is 26.8 kJ/mole. Use the Clausius-Clapeyron equation to determine the vapor pressure at 35 °C. Show all units and conversion factors. Also, include conversions between J and kJ, as well as between °C and K.

To know more about Clausius-Clapeyron equation, follow the link:

https://brainly.com/question/29409537

#SPJ4

Answer:

Critical thinking is the intellectually disciplined process of actively and skillfully conceptualizing, applying, analyzing.

Explanation:

In the laboratory, hydrogen gas is used as fuel for various purposes, including heating. In order to start the heating process, it is necessary to allow the hydrogen gas to flow continuously for a while. This is because there may be air or other gases present in the hydrogen gas pipeline that can affect the heating process.

For such more question on heating process

https://brainly.com/question/29317333

#SPJ8

Answer:

known as reactions and metaphorically breaking the witness into telling the truth. I hope this helped:)

Explanation:

The formula for the strongest acid is: HF.

To compare the strengths of the given acids, we can use their acid dissociation constants (Ka). The larger the Ka value, the stronger the acid.

The Ka values for the given acids are:

Hypochlorous acid (HClO): Ka = 3.5 × 10^-8

Hydrogen sulfide ion (HS^-): Ka = 1.0 × 10^-7

Hydrofluoric acid (HF): Ka = 6.8 × 10^-4

Comparing the Ka values, we can see that hydrofluoric acid (HF) has the largest Ka value and is therefore the strongest acid among the three given acids.

The formula for the strongest acid is: HF.

To know more about hydrofluoric acid refer here:

https://brainly.com/question/24194581

#SPJ11

Answer:

0.583M

Explanation:

M = CV

C is concentration in grams.

V is the volume.

Remember to convert mL to Litres.

Answer:

Decrease

Explanation:

An increase in temperature would increase the dissolution rate and a decrease in temperature would decrease the dissolution rate

Answer:

The rate of dissolving of the solute will increase I think

The volume of 0.586 M Ba(OH)2 solution needed to contain 0.466 ounce of Ba(OH)2 is 0.00952 liters or approximately 9.52 milliliters.

To convert 0.466 ounces to liters, we need to use a conversion factor. One ounce is equivalent to 0.0295735 liters. Therefore, 0.466 ounce is equal to 0.013807 liters.

Now, we can use the formula for molarity to find the volume of the solution. Molarity is defined as moles of solute per liter of solution. We are given the molarity of the solution, which is 0.586 M.

To find the volume of the solution, we can use the following equation:

moles of solute = molarity x volume of solution x molar mass of solute

We are solving for the volume of solution, so we can rearrange the equation:

volume of solution = moles of solute / (molarity x molar mass of solute)

The molar mass of Ba(OH)2 is 171.34 g/mol.

First, we need to convert 0.466 ounce of Ba(OH)2 to moles:

0.466 ounce x (1/28.35 g/ounce) x (1/171.34 g/mol) = 0.000992 moles

Now, we can plug in the values into the equation:

volume of solution = 0.000992 moles / (0.586 M x 171.34 g/mol) = 0.00000952 L or 0.00952 mL

Therefore, the volume of 0.586 M Ba(OH)2 solution needed to contain 0.466 ounce of Ba(OH)2 is 0.00952 liters or approximately 9.52 milliliters.

To know about volume :

https://brainly.com/question/28058531

#SPJ11

Answer:

Because of the earths rotation

Explanation:

But it appears to rise and set because of the Earth's rotation on its axis. It makes one complete turn every 24 hours. ... As the Earth rotates toward the east, it looks like the sun is moving west. As the Earth rotates, different locations on Earth pass through the sun's light.

Answer:

When the earth is rotating, it is rotating away and towards the sun which is why we have day and night

Explanation:

Answer: 0.024 ml of hydrogen gas are collected at \(18.5^0C\) and 755.5mmHg in this single replacement reaction

Explanation:

To calculate the moles :

\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)    

\(\text{Moles of} Ba=\frac{85.0g}{137g/mol}=0.620moles\)

To calculate the number of moles for given molarity, we use the equation:

\(\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution in ml}}\)  

\(3.55M=\frac{\text{Moles of} HCl\times 1000}{275ml}\\\\\text{Moles of }HCl=\frac{3.55\times 275}{1000}=0.976mol\)

The balanced chemical reaction is:

\(Ba+2HCl\rightarrow BaCl_2+H_2\)

According to stoichiometry :

2 moles of \(HCl\) require = 1 mole of \(Ba\)

Thus 0.976 moles of \(HCl\) will require=\(\frac{1}{2}\times 0.976=0.488moles\) of \(Ba\)

Thus \(HCl\) is the limiting reagent as it limits the formation of product and \(Ba\) is the excess reagent.

As 2 moles of \(HCl\) give = 2 moles of \(H_2\)

Thus 0.976 moles of \(HCl\) give =\(\frac{2}{2}\times 0.976=0.976moles\)  of \(H_2\)

According to ideal gas equation:

\(PV=nRT\)

P = pressure of gas = 755.5 mmHg = 0.994 atm   (760 mm Hg = 1 atm )

V = Volume of gas in L = ?

n = number of moles = 0.976

R = gas constant =\(0.0821Latm/Kmol\)

T =temperature =\(18.5^0C=(18.5+273)K=291.5K\)

\(V=\frac{nRT}{P}\)

\(V=\frac{0.994atm\times 0.0820 L atm/K mol\times 291.5K}{0.994atm}=24.0L=0.024ml\)    (1L=1000ml)

Thus 0.024 ml of hydrogen gas are collected at \(18.5^0C\) and 755.5mmHg in this single replacement reaction

Answer:

2NaBr+Cl2=2NaCl+Br2

Explanation:

each side Na2 Br2 Cl2 atom

Answer:

false

Explanation:

because  i know it

Answer:

point When the water reaches 100 ° C , it can no longer absorb thermal energy When the water reaches 100 ° C , any increase in thermal energy becomes potential energy When the water reaches 100 ° C , the flow of thermal energy reverses, maintaining an equilibrium When the water reaches 100 ° C , any increase in

Answer:

D. When the water reaches 100° C, any increase in thermal energy goes to breaking the bonds between water molecules as the water boils and becomes steam.

Explanation:

bcz yes

hope this helps-

The quantity of molecules involved in the reaction is known as the stoichiometric coefficient or stoichiometric number. Any balanced response will have an equal number of components on both sides of the equation, as can be seen by looking at it. Here the mass of MgO is 2.337 g.

By calculating the amounts of reactants and products in chemical equations using stoichiometry is a key idea in chemistry. We employ the ratios from the balanced equation in this situation.

Here the balanced equation is:

2Mg + O₂ ⟶ 2MgO

Moles of Mg = mass  / molar mass

Moles of Mg = 1.41 / 24.31

Moles of Mg = 0.058 mol

Moles of O2 = 2.48 / 32.00

Moles of O2 = 0.0775 mol

the stoichiometric ratio between Mg and MgO is 1:1, and between O2 and MgO is 1:1. Mg is the limiting reactant.

Mass of MgO = moles of MgO produced × molar mass of MgO

Mass of MgO = 0.058 mol × 40.31 g/mol

Mass of MgO = 2.337 g

To know more about stoichiometry, visit;

https://brainly.com/question/29775083

#SPJ4

Answer:

2.976 mol * 6.94 g/mol of lithium is needed to react with 12.6 L of nitrogen gas.

Explanation:

To determine the amount of lithium (Li) needed to react with a given volume of nitrogen gas (N2), we need to consider the balanced chemical equation and the ideal gas law.

What is the ideal gas law?

The ideal gas law is a fundamental equation in thermodynamics that describes the behavior of an ideal gas. It relates the pressure (P), volume (V), temperature (T), and number of moles (n) of a gas using the following equation:

PV = nRT

According to the given question:

Volume of nitrogen gas (V) = 12.6 L

Pressure of nitrogen gas (P) = 745 mmHg

Temperature of nitrogen gas (T) = 28.5 °C

We'll follow these steps to calculate the amount of lithium required:

Step 1: Convert the temperature to Kelvin. T(K) = T(°C) + 273.15 T(K) = 28.5 °C + 273.15 T(K) ≈ 301.65 K

Step 2: Convert the pressure from mmHg to atm. Pressure (P) = 745 mmHg / 760 mmHg/atm Pressure (P) ≈ 0.979 atm

Step 3: Apply the ideal gas law equation to calculate the number of moles of nitrogen gas (N2). PV = nRT

n = PV / RT

R = 0.0821 L•atm/(mol•K) (ideal gas constant)

n = (0.979 atm) * (12.6 L) / (0.0821 L•atm/(mol•K) * 301.65 K) n ≈ 0.496 mol

Step 4: Use the balanced chemical equation to determine the stoichiometry between lithium (Li) and nitrogen gas (N2). The balanced equation is: 6Li + N2 → 2Li3N

From the equation, we can see that 6 moles of lithium react with 1 mole of nitrogen gas.

Step 5: Calculate the moles of lithium needed based on the stoichiometry. moles of Li = (6 moles Li / 1 mole N2) * 0.496 mol N2 moles of Li ≈ 2.976 mol

Step 6: Calculate the mass of lithium using the molar mass of lithium.

Molar mass of Li = 6.94 g/mol mass of Li = moles of Li * molar mass of Li

Mass of Li ≈ 2.976 mol * 6.94 g/mol

The calculated mass of lithium will give us the amount of lithium needed to react with 12.6 L of nitrogen gas at the given conditions.

To know more about ideal gas law, refer here:

https://brainly.com/question/27870704

#SPJ4

Answer: I think it is A

Explanation:

Explanation:

\(eukaryotic\)

Answer:

get what right?

Answer:

You didn't post the question.

Explanation:

Edit your question and I'll try to help you.

Hope this helped? Lol.

Pacifica Ocean just search it up online

Answer:

12

Explanation:

That is because 2 x 6 = 12

There are 12 atoms of carbon in two molecules of glucose (C₆H₁₂O₆).

Glucose, which is a simple sugar, has the chemical formula C6H12O6. Glucose is the most prevalent monosaccharide, a type of carbohydrate and it has two forms alpha and beta. It is a monomer of carbohydrates, starch, and cellulose which are larger compounds. On Earth, this is the most abundant organic compound.

If we see the molecular formula of glucose, C6H12O6, a single glucose molecule has 6 carbon atoms, 6 oxygen atoms, and 12 hydrogen atoms.

Therefore two molecules of glucose would have 12 carbon atoms, 24 hydrogen atoms, and 12 oxygen atoms.

Thus, Two molecules of glucose (C₆H₁₂O₆) have 12 carbon atoms.

To learn more about the number of atoms;

https://brainly.com/question/2453234

Heliocentric model of the solar system state the sun is assumed to lie at or near a central point and the earth and other bodies revolve around it.

Heliocentrism is the astronomical model developed by Nicolaus Copernicus and published in 1543 and this model postulate that the sun at the center of the universe with Earth and the other planets orbiting around it in circular paths and main heliocentric means earth revolve around the sun is called as heliocentric theory

Know more about heliocentric

https://brainly.com/question/18403954

#SPJ1

80g•1moles/68.94g= 1.16g

When doubling the number of the moles of the HCl decrease the rate of HCl production because the acid convertase enzyme is converting HCl back into H⁺ and Cl⁻.

The reaction is as follows :

H⁺  +  Cl⁻  ⇄ HCl

If we double the number of the moles of the HCl , it decreases the rate of the HCl production because of the reason that  the acid convertase enzyme is converting the HCl back into the H⁺ and Cl⁻. The purpose of the  enzyme is to allow the conversion of the reactant to the product and the product back to the reactant

To learn more about moles here

https://brainly.com/question/29724957

#SPJ4

Answer:

v = 34.62 L

Explanation:

Given data:

Moles of H₂ = 2.50 mol

Temperature of gas = -20.0°C

Pressure of gas = 1.5 atm

Volume of gas = ?

Solution:

Formula:

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

-20 + 273 = 253 K

Now we will put the values in formula.

1.5 atm × v = 2.50 mol ×0.0821 atm.L/ mol.K  ×  253 K

1.5 atm × v = 51.93 atm.L

v = 51.93 atm.L/1.5 atm

v = 34.62 L

The volume of hydrogen is 34.62 L.

18.3 g of solid precipitate formed during the reaction.

Formula of lead(ii) perchlorate = \(Pb(ClO4)_{2}\)

Formula of  sodium sulfate = \(Na_2(SO_4)\)

Reaction of lead(ii) perchlorate and sodium sulfate

\(Pb(ClO4)_{2}\) + \(Na_2(SO_4)\)    ---------->  \(PbSO_4(s)\)    + \(2Na(ClO4)_{2}\)

moles of  \(Pb(ClO4)_{2}\)  =  \(\frac{given mass}{ Molar mass}\)

molar mass of \(Pb(ClO4)_{2}\) =207+(35.5+ 16*4)*2

molar mass of \(Pb(ClO4)_{2}\) =207+ 99.5*2

molar mass of \(Pb(ClO4)_{2}\) =406

given mass = 33.17g

moles of  \(Pb(ClO4)_{2}\)  =  \(\frac{given mass}{ Molar mass}\)    

moles of  \(Pb(ClO4)_{2}\) =  \(\frac{33.17}{406}\)  

moles of  \(Pb(ClO4)_{2}\) = 0.0817 moles

molar mass of \(Na_2(SO_4)\)  = 2*23+ 32+ 4*16

molar mass of \(Na_2(SO_4)\)  = 46+32+64

molar mass of \(Na_2(SO_4)\)  = 142

moles of      \(Na_2(SO_4)\)  =      \(\frac{given mass}{ Molar mass}\)    

moles of      \(Na_2(SO_4)\) = \(\frac{8.564}{142}\)  

moles of      \(Na_2(SO_4)\) = 0.0603 moles

since in the above reaction \(Pb(ClO4)_{2}\) is the solid precipitate so we have to find the weight of \(PbSO_4(s)\) formed after the reaction.

Given that the reaction is complete so one of the 2 reactant must completely ends since \(Na_2(SO_4)\) have less number of moles than \(Pb(ClO4)_{2}\)  so , \(Na_2(SO_4)\) will disappear and hence according to Stoichiometry  same number of moles of \(PbSO_4(s)\) will form

so number of moles of \(PbSO_4(s)\) formed = 0.0603

so, the weight of \(PbSO_4(s)\) formed = number of moles formed * molar mass of \(PbSO_4(s)\)

so weight of \(PbSO_4(s)\) formed  =0.0603 * 303

weight of \(PbSO_4(s)\) formed= 18.27 g ≈ 18.3 g

To know more about solid precipitate click on link below:

https://brainly.com/question/11194650#

#SPJ4

The reaction that occur at the anode of an electrochemical cell is Zn(s) Zn²+ (aq) + 2e. The correct option is B.

An electrochemical cell has two eletcrodes present in an solution. The one electrode is anode where oxidation occurs and second is cathode hwere reduction occurs.

The reaction Zn(s) = Zn²+ (aq) + 2e due to oxidation chrage is added here.

Thus, the correct option is B. Zn(s) = Zn²+ (aq) + 2e.

Learn more about electrochemoical cell

https://brainly.com/question/12034258

#SPJ1

The choice of mixture will depend on the specific goals of the experiment and the chemical properties of the substances being used. It is important to carefully consider these factors before choosing the appropriate mixture for the acid/base reaction.

When deciding on an acid/base reaction, it is important to choose the appropriate mixture for the experiment. The mixture chosen will depend on the specific reaction being conducted and the desired outcome.

For example, if the goal of the experiment is to neutralize an acid, a basic solution would be the appropriate mixture. This is because the basic solution will react with the acid to form water and a salt, neutralizing the acid.

On the other hand, if the goal of the experiment is to create a chemical reaction, an acid solution may be the appropriate mixture. This is because the acid will react with a base to form a salt and water, creating a chemical reaction.

Overall, the choice of mixture will depend on the specific goals of the experiment and the chemical properties of the substances being used. It is important to carefully consider these factors before choosing the appropriate mixture for the acid/base reaction.

To know more about acid/base reaction refer to

https://brainly.com/question/15209937

#SPJ11

B) Absorption of ultraviolet light by organic molecules always results is Excitation of bound electrons.

B is the response to this query. Electronic excitation always happens when organic compounds absorb ultraviolet light. Bond breaking, ionization, or bond vibration may then follow, but none of these outcomes is assured by the absorption of UV light.

Due to the ultraviolet light's high frequency, which causes the electrons in an atom's outer shell to leap out of their ground state when excited, organic molecules that absorb ultraviolet light cause the bound electron to be excited. The energy that is transferred from the light to the atoms is what is causing this excitation.

To know more about ultraviolet:

https://brainly.com/question/3091095

#SPJ4

the number of hydrogen atoms in the tablets is 18.

i) Molar mass of ibuprofen, C13H18O2The molecular formula of ibuprofen is C13H18O2. We need to calculate the molar mass of ibuprofen, which is the sum of the atomic masses of all the atoms present in one molecule of ibuprofen, and it is given as;

Molar mass of C13H18O2 = (13 × atomic mass of C) + (18 × atomic mass of H) + (2 × atomic mass of O

Now, the atomic mass of carbon is 12.01 g/mol, the atomic mass of hydrogen is 1.008 g/mol and the atomic mass of oxygen is 16 g/mol. Therefore, putting these values, we get:

Molar mass of C13H18O2 = (13 × 12.01) + (18 × 1.008) + (2 × 16) = 206.29 g/mol

Thus, the molar mass of ibuprofen, C13H18O2 is 206.29 g/mol.

ii) Number of moles of ibuprofen

Total mass of ibuprofen in the bottle = 0.0170 kg = 17 g

The molar mass of ibuprofen, C13H18O2 is 206.29 g/mol.

Therefore, the total number of moles of ibuprofen present in the tablets is given as:

Number of moles of ibuprofen = Mass of ibuprofen/Molar mass of ibuprofen= 17/20

6.29= 0.08238 moles

iii) Number of molecules of ibuprofen

The Avogadro number or the number of particles in 1 mole of any substance is 6.022 × 1023. Thus, the total number of molecules of ibuprofen present in the tablets is given as:

Number of molecules of ibuprofen = Number of moles of ibuprofen × Avogadro number

= 0.08238 × 6.022 × 1023= 4.96 × 1022 molecules

iv) Number of hydrogen atoms in the tablets

The molecular formula of ibuprofen is C13H18O2. Thus, it contains 18 hydrogen atoms.

Therefore, the number of hydrogen atoms in the tablets is 18.

learn more about atomic mass here

https://brainly.com/question/30390726

#SPJ11