Question

1. Which of the following gas samples would have the largest volume, if all samples are...

1. Which of the following gas samples would have the largest volume, if all samples are at the same temperature and pressure?
A. 0.309 moles CH4

B. 9×1023 molecules of N2

C. 65.7 grams of Xe

D. they would all have the same volume

2. Which of the following gas samples would have the largest volume, if all samples are at the same temperature and pressure?
A. 174.5 grams of Xe

B. 8×1023 molecules of N2

C. 1.33 moles CO2

D. they would all have the same volume

Homework Answers

Answer #1

1. Higher number of moles will have high volume

Moles of N2 = number of particle/ avagadro number

= (9*10^23)/(6.022*10^23)

= 1.495

Moles of Xe = mass / molar mass

65.7 / 131.3

= 0.5

CH4 = 0.309

So, option B is correct.

2. Moles of Xe = 174.5 / 131.3

= 1.33

Moles of N2 = ( 8*10^23 ) / ( 6.022*10^23)

= 1.33

Moles of CO2 = 1.33

All have same moles so same volume .

Option D

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