Question

What is the molar mass of a gas with a density of 3.786 g/L at STP? Which noble gas is it most likely to be?

Answer 1

The molar mass of a gas can be calculated by dividing the density of the gas by its molar density at STP, which is 0.08206 g/L. Therefore, the molar mass of the gas is 3.786 g/L / 0.08206 g/L = 46.3 g/mol.

The most likely noble gas with a molar mass of 46.3 g/mol is Xenon (Xe), which has a molar mass of 131 g/mol.

Step-by-step explanation: