# Chem

posted by
**Jason**
.

Would you please tell me if these are right?

A sample of helium has a volume of 325 ml and a pressure of 655 mm hg. What will be the pressure if the helium is compressed to 125 ml (t and n are constant)

I got 1703 mm of Hg

A 75.0 ml sample of oxygen has a pressure of 1.50 atm. what will be the new volume if the pressure becomes 4.50 atm? (t and n constant)

I got 25 mL.

In a weather report, the atmospheric pressure is given as 29.4 inches of Hg. what is the corresponding pressure in mm Hg?

I got 735 mm