if 032 moles of H2 gas occupies 25 L how many moles of H2 wi

if 0.32 moles of H2 gas occupies 2.5 L, how many moles of H2 will it take to occupy 10.7 L at the same temperature and pressure?

Solution

PV = nRT, R = gas constant

At constant T and P

V/n = constant

V1/n1 = V2/n2

n2 = V2 x n1 / V1

n2 = 10.7 L x 0.32 mol / 2.5 L

n2 = 1.37 mol

Answer = 1.37 mol of H2