Question

The pressure in an automobile tire is 1.91 atm at 25.0°C. What will be the pressure if the temperature increases to 39.0°C?

Answer 1

Answer:
We must use the equation P2= (P1•T2)/T1 and plug in what we have.

We have to convert our temperature to kelvins for this to work. We add 273 to either of the temperatures to convert it. So we are left with, T1=298.15K and T2=312.15K.

Now we plug in.

P2=(1.91atm•312.15K)/298.15K
Using PEMDAS we can eliminate the K on the numerator and denominator so that we are left with the atm’s.
P2=(1.91atm•312.15)/298.15
P2=1.99atm

Solution:
1.99 atm