What is the number of nitrous oxide molecules,N₂O,in 0.150 L of the gas at 450 K and 450 mm Hg pressure? (R = 0.0821 atm • L/mol • K)

Question

Quizplus · Accepted Answer

First, convert the pressure from mm Hg to atm: 450 mm Hg * (1 atm / 760 mm Hg) = 0.5921 atm. Use the ideal gas law PV = nRT to find moles (n): n = PV / RT = (0.5921 atm * 0.150 L) / (0.0821 atm•L/mol•K * 450 K) = 0.0024 mol. Convert moles to molecules using Avogadro's number (6.022 x 10^23 molecules/mol): 0.0024 mol * 6.022 x 10^23 molecules/mol = 1.45 x 10^21 molecules.

What Is the Number of Nitrous Oxide Molecules,N₂O,in 0