Question

At the start of a road trip, the pressure of the air in a car tyre is 276kPa and the temperature is 12.0 degrees celsius. After driving for some time the pressure in the tyre is now 303kPa.

Assuming that the volume of the air inside the tire remains constant, determine the new temperature?

(assume an ideal gas law)

Answer 1

P V = n R T
P/T = n R/V
so in this problem P/T is constant

12 + 273 = 285 degrees Kelvin

276/285 = 303/T
so
T =303 *(285/276) in degrees Kelvin
subtract 273 to get degrees centigrade