How Many Molecules of N₂ Are in a 400

Multiple Choice

How many molecules of N₂ are in a 400.0 mL container at 780 mm Hg and 135°C?

A) 7.01 × 10^{21 molecules}
B) 7.38 × 10^{21 molecules}
C) 2.12 × 10²² molecules
D) 2.23 × 10²² molecules