10 mole of oxygen is heated... |JEE Main 2026 21 Jan Shift 1

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JEE MAIN 2026

21-01-2026 S1

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10 mole of oxygen is heated at constant volume from $30^{\circ} \mathrm{C}$ to $40^{\circ} \mathrm{C}$. The change in the internal energy of the gas is $\_\_\_\_$ cal. (The molecular specific heat of oxygen at constant pressure, $C_P=7 \mathrm{cal} / \mathrm{mol} .^{\circ} \mathrm{C}$ and $\mathrm{R}=2 \mathrm{cal} . / \mathrm{mol} .{ }^{\circ} \mathrm{C}$.)

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