radiator on your car is normally 1.57 atm of pressure at 50.0 degrees Celsius. What does the pressure ch?

Question

Your radiator on your car is normally 1.57 atm of pressure at 50.0 degrees Celsius. What does the pressure change to if the temperature increases to 128 degrees Celsius? Give an answer and an explanation on how you arrived at it.

Answer 1

For an ideal gas the equation is pV=nRT
T is in deegres absolute.

So 50°C=323K and 128°C=401 K

We can write

p1V =nRT1
p2V=nRT2

Since V,n and R are the same

p1/p2=T1/T2

1.57/p2= 323 / 401

1.57/ p2 = 0.805

p2=1.57 /0.805= 1.95 atm