Question

The Temperature of 5 moles of a gas constant volume is changed from
100

Answer 1

your question is incomplete. A complete question is -----> The temperature of 5 moles of a gas at constant volume is changed from 100°C to 120°C. The change in internal energy is 80 J. The total heat capacity of the gas at constant volume will be in joule/Kelvin is.

solution :- number of mole of gas , n = 5
initial temperature, Ti = 100°C
final temperature , Tf = 120°C
the change in internal energy , ∆U= 80J

we know, change in internal energy = heat at constant volume.
= nCvdT

here, Cv is molar specific heat capacity , dT is Temperature change.

so, 80 = 5 × Cv × (120- 100)
Cv = 80/100 = 4/5 J/K/mol

so, total heat capacity = number of mole × molar heat capacity
= 5 × 4/5 = 4 J/k

Answer 2

Answer:

above explanation is very exactly correct