If R = universal gas constant, amount of heat needed to raise temperature of 2, mol of an ideal mono

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11.Thermodynamics

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If $R =$ universal gas constant, the amount of heat needed to raise the temperature of $2\, mol$ of an ideal monoatomic gas from $273\, K$ to $373\, K$ when no work is done is

A

$100\,R$

B

$150\,R$

C

$300\,R$

D

$500\,R$

Solution

$\begin{array}{l}
\Delta Q = \Delta U = n{C_v}\Delta T\\
= 2 \times \frac{{3R}}{2} \times 100 = 300\,R
\end{array}$

Standard 11

Physics

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