1. Tardigrade
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  4. 2 k mol of hydrogen at NTP expands isobarically to twice its initial volume. The change in its internal energy is (Cv=. 10 kJ / kg . K and atm pressure =1 × 105 N / m 2 )

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Q. $2 \,k\, mol$ of hydrogen at NTP expands isobarically to twice its initial volume. The change in its internal energy is $\left(C_v=\right.$ $10 \,kJ / kg . K$ and atm pressure $=1 \times 10^5 \,N / m ^2$ )

Thermodynamics

Solution:

$\Delta U=n C_v \Delta T=2 \times 10^3 \times 20 \times 273=10.9\, MJ$