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A tank used for filling helium balloons has a volume of 0.3m³ and contains 2mol of helium gas at 20^oC . Assuming that the helium behaves like an ideal gas. The total translational kinetic energy of the molecule of the gas is ________ $\times 10^{3} J$ .

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answer is 7.31.

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Detailed Solution

$\begin{array}{l} {KE}_{0} = \frac{3}{2} n R T \end{array}$

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