Question

The volume of a fixed amount of gas is doubled, and the absolute temperature is doubled. According to the ideal gas law, how has the pressure of the gas changed?

It has increased to two times its original value.
It has increased to four times its original value.
It has decreased to one-half its original value.
It has stayed the same.

Answer 1

It has stayed the same.

Step-by-step explanation:

Answer 2

The ideal gas laws may be collectively expressed mathematically as:
PV/T = constant
Therefore, we may use this to determine the final pressure by equating the initial and final conditions:
PV/T = P * 2V / 2T
PV/T = PV/T
P = P
Therefore, the pressure is unchanged. It has stayed the same.