Amass of gas under constant pressure occupies a volume of 0.5 m3 at a temperature of 20 degree celsius. using the formula for cubic expansion, what will be the volume at a temperature of 45 degree celsius without a change in pressure?

a) 0.5228938 m3
b) 0.0228938 m3
c) 0.5457875 m3
d) 0.0457875 m3

C) 0.5457875

Explanation: Charles' Law: This law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles.

   (At constant pressure and number of moles)

where,

= initial volume of gas =

= initial temperature of gas =

= final volume of gas = 0?

= final temperature of gas =

Thus the final volume is

scientific laws are the result of testing theories and proving them to be facts.