Find the molar mass of each gas measured at the specified conditions. a) 3.48 g of gas occupying 1.52 L at 265 K and 1.63 atm. Answer in units of g/mol.

Molar mass = 31.64 g/mol

Explanation:

Given data:

Mass of gas = 3.48 g

Volume of gas = 1.52 L

Temperature of gas = 265 K

Pressure of gas = 1.63 atm

Molar mass of gas = ?

Solution:

Formula:

Molar mass = Mass/ number of moles

First of all we will calculate the number of moles from given data.

PV = nRT

P = pressure

V = volume

n = number of mole

R = ideal gas constant

T = Temperature

n = PV/RT

n = 1.63 atm × 1.52 L / 0.0821 atm. L /mol.K ×265 K

n = 2.48 / 21.76/mol

n = 0.11 mol

Molar mass:

Molar mass = Mass/ number of moles

Molar mass = 3.48 g /  0.11 mol

Molar mass = 31.64 g/mol