A certain quantity of neon gas is under 1.05 atm pressure at 303 K in a 10.0 L vessel. How many moles of neon are present?
A) 0.222 mol
B) 0.402 mol
C) 0.422 mol
D) 2.37 mol

Question

Quizplus · Accepted Answer

We can use the Ideal Gas Law formula: PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature in Kelvin.

Rearranging the formula to solve for n, we get: n = PV/RT

Plugging in the given values, we get: 
n = (1.05 atm)(10.0 L)/(0.08206 L·atm/mol·K)(303 K)
n = 0.422 mol

Therefore, the answer is choice C, 0.422 mol.

A Certain Quantity of Neon Gas Is Under 1