Question

A sample of hydrogen with a volume of 800 mL exerts a pressure of 620 mm Hg at 5°C.
Approximately what volume will it occupy at standard temperature and pressure?

V2=800x620x273/760x278
=135,408,000/211,280

V2=640.9 mL

Can someone tell me if I'm correct or not?

Answer 1

lets think. You are increasing pressure about 20 percent, and redkucing temp very slightly.

volume ought to go down about 20 percent due to pressure, and no noticalbe change on temp.

you went from 800 ml down to about 640, about a twenty percent change.

Looks good.