Gas Laws - Chemistry

Question

Which sample contains more atoms: 1,340 mL of neon at 35.5 ˚C and 840 mmHg or 1.48 L of argon at 48.9 ˚C and 0.790 atm? 

moles Ne = _______ mol

moles Ar = ______mol

Answer 1

n = PV/RT In chemistry we usually use R = .0821 liter-atm/mole-K . This problem is a matter of plugging into this equation with the proper units

Neon: 1340 ml = 1.34 liters and 35.5°C = 308.65 K and P = (840/760) atm

For argon, you only need to adjust temperature.

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