Question

A 16.0 g sample of methane gas, CH4, the gas used in a chemistry lab, has a volume of 5.0 L at 27ºC. Calculate the pressure.

Answer 1

4.9 atm

Step-by-step explanation:

convert 16.0g of CH4 to moles

16.0 g CH4 x 1 mol CH4/16.0 g CH4 = 1.00 mol of methane

convert the temp into Kelvins: 27 + 273 = 300.K

PV = nRT

(P) (5.0 L) = (1.00 mol) (0.0821 L atm/mol K) (300.K)

P = 4.9 atm