The volume of a sample of nitrogen is 6.00 liters at 35oC and 0.75 atm. What volume will it occupy at STP?

A) 6.59 L

B) 5.46 L

C) 3.98 L

D) 4.21 L

The volume that will occupy at STP is calculated as follows

by use of ideal gas equation

that is PV=nRT where n is number of moles calculate number of moles

n = PV/RT

p=0.75 atm

V=6.0 L

R = 0.0821 L. atm/k. mol

T = 35 + 273 = 308k

n=?

n = (o. 75 atm x 6.0 L) / (0.0821 L. atm/k. mol x 308 k) = 0.178 moles

Agt STP 1 mole = 22.4 L what obout 0.178 moles

= 22.4 x0.178moles / 1moles = 3.98 L (answer C)