A sample of a gas weighing 15.1 g occupies 2.25 L at 1.75 atm and 20.0 $\circ$ C.If the empirical formula of the gas is NO₂,what is the molecular formula?

Question

Quizplus · Accepted Answer

To find the molecular formula, first calculate the molar mass using the ideal gas law. The empirical formula NO₂ has a molar mass of 46.01 g/mol. Using the ideal gas law, PV = nRT, calculate the number of moles (n) and then the molar mass of the gas. The calculated molar mass is approximately 92 g/mol, which is twice the empirical formula mass, indicating the molecular formula is N₂O₄.

A Sample of a Gas Weighing 15 ∘\circ∘ CIf the Empirical Formula of the Gas Is NO2,what Is

A Sample of a Gas Weighing 15 $\circ$ CIf the Empirical Formula of the Gas Is NO₂,what Is