A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25-g sample of the gas occupies a volume of 1.00 L and exerts a pressure of 1.26 atm at -4.0^$\circ$C. Which of these choices is its molecular formula A) NO B) NO₂ C) N₃O₆ D) N₂O₄ E) N₂O₅

Question

Quizplus · Accepted Answer

The molar mass of the gas is:(5.25 g) / (1.00 L) * (273.15 K / (273.15 K - 4.0)) * (0.0821 Latm/(molK)) = 46.0 g/molThe empirical formula of the gas is:N306The molecular formula of the gas is:N2O4

A Gaseous Compound Is 30 ∘\circ∘ C Which of These Choices Is Its Molecular Formula A)

A Gaseous Compound Is 30 $\circ$ C Which of These Choices Is Its Molecular Formula
A)