The density of a gas at 1 atm and 0°C is 1.5 g/L. What is its molecular weight?
Q1. The density of a gas at 1 atm and 0°C is 1.5 g/L. What is its molecular weight?
Answer: 33.6
Explanation: Use the ideal gas law to find M: d = PM / RT, so M = dRT / P = 1.5 * 0.0821 * 273 / 1 = 33.6 g/mol.