A gas sample with a volume of 4.00 L has a pressure of 750 mm Hg and a temperature of 77 degrees C. ?

Question

What is its new volume at 277 degrees C?

Answer 1

The answer is 6.28 L.

Use V1/T1 = V2/T2.

So: (4.00 L)/(77 + 273) = V2/(277 + 273)

Then, cross multiply to get that: V2 = 6.2857 L. But, using proper significant figures, you get 6.28 L.

To check yourself, just look at the context of the problem. If you increase the temperature of a gas, while maintaining a constant pressure, it is only obvious that the volume will also increase.

Answer 2

V/T = Vn/Tn

4.00/(273+77) = Vn/(273+277)

Vn = 6.29 L