I have 760 mm Hg at 10 km.

Question

How do I convert this to atms? I know that 101.3 atm is equal to 760 mmHg but i don't know how the 10 km will affect this.

Answer 1

760mmHg is 1 atm.

Now, your statement on 101.3: 101.3 kiloPascals is one atmosphere.

Memorize these, standard pressure:
1 atm, 760 torr, 760mmHg, 101.3kPa, 14.7lbs/in^2, 29.9 in Hg.
http://en.wikipedia.org/wiki/Atmospheric_pressure