5 gm of air is heated from 273 K to 275 K. the change in internal energy of air will be
(CV = 172 cal/kg K and 4.2 J/cal)
7.22 J
5.22 J
8.16 J
3.5 J
Additional Questions
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K.E. per unit volume is given by |
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Mean kinetic energy per gram molecule of a gas is given by |
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If E is the kinetic energy per mole of a gas, and T is the absolute temperature, then the universal gas constant is given by |
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According to kinetic theory of gasses at absolute zero temperature |
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The mean translational K.E. per unit volume E and the pressure P of a perfect gas are related as |
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One mole of ideal gas required 207 J heat to rise the temperature by 10 K when heated at constant pressure. If the same gas is heated at constant volume to raise the temperature by the same 10K the heat required is (R = 8/3 J/mole K) |
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The root mean square speed of hydrogen molecules at 300 K is 1930 m/s. then the root mean square speed of oxygen molecules at 900 K will be |
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If 1 kg of water at its normal boiling point forms 1.671 m3 of steam, the external latent heat of vaporization of water is about (J = 4200 J/kcal) |
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If P is the exerted by a gas and E is the K.E. per unit volume, then |
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A gas at a pressure P0 is contained in a vessel. If the masses of all the molecules are halved and their velocities doubled, the resulting pressure P would be equal to |
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