PYQ Vault
EbooksTutor

Change in internal energy at constant volume from the heat capacity

This type of question, asked 2 times: 13 May 2026 S1, 19 May 2026 S1. All 2 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    13 May 2026 S1

    115
    Six moles of oxygen gas is heated from 20∘20^\circC to 35∘35^\circC at constant volume. If specific heat capacity at constant pressure is 8 cal mol−1 k−18\ \mathrm{cal\,mol^{-1}\,k^{-1}} and gas constant is 2 cal mol−1 k−12\ \mathrm{cal\,mol^{-1}\,k^{-1}}. The change in internal energy of the gas is

    Tap an option to check your answer.

  2. Question 2

    19 May 2026 S1

    116
    When the temperature of 4 moles of a gas was increased from 70∘C70^\circ\mathrm{C} to 90∘C90^\circ\mathrm{C}, at constant volume, the change in internal energy was 6060 J. The total heat capacity of the gas at constant volume is

    Tap an option to check your answer.