A sample of nitrogen gas is confined to a 14.0-L container at 375 torr and 37.0°C. How many moles of nitrogen are in the container? (R = 0.08206 L • atm/K • mol, 1 atm = 760 torr)
A) 0.272 mol
B) 2.27 mol
C) 3.69 mol
D) 206 mol
E) 227 mol

Question

Quizplus · Accepted Answer

To find the number of moles, use the ideal gas law: PV = nRT. Convert pressure to atm (375 torr / 760 torr/atm = 0.493 atm) and temperature to Kelvin (37.0°C + 273.15 = 310.15 K). Plug in the values: (0.493 atm)(14.0 L) = n(0.08206 L•atm/K•mol)(310.15 K). Solving for n gives approximately 0.272 mol.

A Sample of Nitrogen Gas Is Confined to a 14