Chemistry, 08.04.2020 03:11 makenahbriana

In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is if the partial pressures of He and Ne are 1.50 and 2.00 atm, respectively.

Answers: 2

Show answers

Answers

Answer from: briannamartinez2528

1.71

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

$p_{total}=p_A+p_B+p_C$

Given :

$p_{total}$ = total pressure of gases = 8.40 atm

$p_{He}$ = partial pressure of helium = 1.50 atm

$p_{Ne}$ = partial pressure of neon = 2.00 atm

$p_{Ar}$ = partial pressure of argon = ?

putting in the values we get:

$8.40=1.50+2.00+p_{Ar}$

$p_{Ar}=4.90$

To calculate the vapor pressure of the solution, we use the law given by Dalton, which is:

$P_{total}=(p_{Ar}\times \chi_{Ar})$

We are given:

p_Ar = partial pressure of argon = 4.90

$\chi_{Ar}$ = mole fraction of argon = ?

Putting values in above equation, we get:

$8.40=[(4.90\times \chi_{Ar})$

$\chi_{Ar}=1.71$

Thus the mole fraction of Ar is 1.71

Answer from: Quest

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

Answer from: Quest

You would be correct, boiling water does disinfect contamination. the property of disinfecting means to kill germs, bacteria and other pathogens or contamination that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate. the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.

Another question on Chemistry

Chemistry, 22.06.2019 11:00

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.

Answers: 2

Answer

Chemistry, 22.06.2019 15:00

What is the most important factor in determining climates.

Answers: 1

Answer

Chemistry, 22.06.2019 21:00

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.

Answers: 3

Answer

Chemistry, 22.06.2019 23:30

If it is an isoelectronic series select true, if not select false. o2-, s2-, se2-, te2- na+, k+, rb+, cs+ n3-, p3-, as3-, sb3- ag, cd+, sn3+, sb4+ f-, cl-, br-, i- f-, ne, na+, mg2+ s2-, s, s6+

Answers: 1

Answer

You know the right answer?

In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is if...

Questions