Determine the density of air in grams per liter at a temperature of 20.5 deg. C and a pressure of 755 mmHg.?

Determine the density of air in grams per liter at a temperature of 20.5 deg. C and a pressure of 755 mmHg. Assume that air is approximately 20% O2 and 80% N2 (i.e. the mole fraction of oxygen is 0.20 and the mole fraction of nitrogen is 0.80) I need the explanation or how to on solving problem like this please!... show more Determine the density of air in grams per liter at a temperature of 20.5 deg. C and a pressure of 755 mmHg. Assume that air is approximately 20% O2 and 80% N2 (i.e. the mole fraction of oxygen is 0.20 and the mole fraction of nitrogen is 0.80)

I need the explanation or how to on solving problem like this please! Thank you so much! =)
Update: Can you explain how you got 1.29 g/L to begin with?
1 answer 1