The volume of a sample of gas is 25.0 mL when the temperature is 270 K. If the temperature is changed to 303 K, what will be the new volume occupied by the gas assuming that the pressure remains constant? (P2= V1/T2/T1)

answer: the potential energy decreases from 379 j to 243 j

explanation:

for the law of conservation of energy, the total energy in a system must be conserved. the total energy of the system is given by the sum of kinetic (k) and potential (u) energy:

e = k + u

the total energy is e=675 j, and this does not change.

initially, the kinetic energy is k=296 j, so the potential energy is

at the end, the kinetic energy is k=432 j, so the potential energy is

so, we see that the potential energy has decreased from 379 j to 243 j.