Chemistry

Problem

An unknown gas has a density of 1.96 g L⁻¹ at 25 °C and 0.985 atm. What is the molar mass of the gas? a)

24.5\ \text{g mol}^{-1}

49.8\ \text{g mol}^{-1}

43.9\ \text{g mol}^{-1}

12.9\ \text{g mol}^{-1}