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A. 0.820 mol
B. 0.619 mol
C. 0.751 mol
D. 7.82 mol

2006-10-20 09:08:14 · 3 answers · asked by Jeff W 1 in Science & Mathematics Chemistry

3 answers

Find volume at STP (0°C and 760 mm Hg) as 1 mole of gas occupies 22,4L at STP

Remember also to convert °C to °K (0°C = 273.5°K and 29°C = 302.5°K

Use gas equation

P1V1/T1 = P2V2/T2

795 x 17.8/302.5 = 760 x V2/273.5

Thus V2 = 795 x 17.8 x 273.5/(302.5 x 760)

= 16.8347 ..... L/ 22.4L
≈ 0.752 moles

Option C

2006-10-20 10:11:53 · answer #1 · answered by Wal C 6 · 0 1

use pV = nRT, and don't forget to switch to degrees Kelvin, and solve for n (moles). Make sure you use the constant R that contains moles. Thus:

n = pV/RT

Solve it.

2006-10-20 11:12:50 · answer #2 · answered by MrZ 6 · 1 1

Do your homework.

2006-10-20 09:16:26 · answer #3 · answered by 2007_Shelby_GT500 7 · 0 0

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