100cm3 of air at 10 degree centigrade is heated to 80 degrees centigrade.What will be the new volume of the pressure that remains as atmospheric pressure?
initial temp = 273+10 = 283 K
final temp = 273 + 80 = 353 K
P V = nRT
p and R and n are constant here so
p/nR = T/V is the same before and after so
353/V = 283/100
solve for V