Chem
posted by Alice .
Can you please tell me if these are right?
A gas has a volume of 2.8 L at a temperature of 27 degrees C. What temperature degrees C is needed to expand the volume to 15 L? (P and n are constant.)
I got 1334 degress C
Combined gas law problem a balloon is filled with 500.0 mL if helium at a temperature of 27 degress C and 755 mm Hg. As the baloon rises in the atmoshper the pressure and temperature drop what volume will it have when it reaches an altiude where the temperature is 33 degrees C and the prssure is 0.65 atm.
I got 609 mL.
Thanks.

I agree with #1. #2 I get 611 mL.