Calculate the volume that 12.5 grams of methane gas (CH4) will occupy at a temperature of 40 C and a pressure of 1.3 atm

Question

Chemistry

Thalia Pitts

26 August, 04:47

Calculate the volume that 12.5 grams of methane gas (CH4) will occupy at a temperature of 40 C and a pressure of 1.3 atm

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Answers (1)

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Kristen Shepard · Answer 1

First find the molar mass (mm) for Methane--> CH4 = 12 + (1*4)

= 16 grams/mole CH4 - - > now flip this:

So the = # of moles (n)

= 12.5g CH4 * 1 mole CH4 / 16g CH4

n = 0.78 moles

P = 1.30 atm, T = 40C = 273K + 40C

= 313K, V = ?

PV = nRT - - > V = nRT/P

V = (0.78) (.082) (313) / 1.30

V = 20.1 / 1.30 = 15.4 L