Atank is filled with an ideal gas at 400 k and pressure of 1.00 atm.
the tank is heated until the pressure of thegas in the tank doubles. what is the temperature of the gas?
200\rm k
400\rm k
600\rm k
800\rm k
correct

To find the temperature it is necessary to use the expression and concepts related to the ideal gas law.

Mathematically it can be defined as

Where

P = Pressure

V = Volume

n = Number of moles

R = Gas constant

T = Temperature

When the number of moles and volume is constant then the expression can be written as

Or in practical terms for this exercise depending on the final temperature:

Our values are given as

Replacing

Therefore the final temperature of the gas is 800K