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What will be the change in internal energy if 10 g of air is heated from `20^(@)C` to `30^(@)C` at constant volume? Given , for air, `c_(v) = 0.17 cal cdot g^(-1) cdot^(@)C^(-1)`.

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71.4 J
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What will be the change in internal energy of 128 g of oxygen gas at constant volume when it is heated from 30^(@)C to 45^(@)C ? The molar specific heat of oxygen at constant pressure is C_(p) = 7.03 cal cdot mol^(-1) cdot^(@)C^(-1) and R = 8.31 J cdot mol^(-1) cdot^(@)C^(-1) .

The temperature of 20 g of oxygen gas is raised from 50^(@)C to 100^(@)C . (ii) At constant pressure. Find out the amount of heat supplied and the rise in internal energy in case. Given , R = 2 cal cdot mol^(-1) cdot K^(-1) , for oxygen, c_(v) = 0.155 cal cdot g^(-1) cdot^(@)C^(-1) .

The temperature of 20 g of oxygen gas is raised from 10^(@)C to 90^(@)C . Find out the heat supplied, the rise in internal energy and the work done by the gas, if the temperature rises at (i) constant volume. (ii) constant pressure. Given the specific heats of oxygen are 0.155 cal cdot g^(-1) cdot^(@)C^(-1) at constant volume, and 0.218 cal cdot g^(-1) cdot^(@)C^(-1) at constant pressure.

The temperature of 10 g nitrogen gas is increased from 20^(@)C to 120^(@)C (i) at constant volume. Find out the amount of heat supplied, increase in internal energy and external work done in the case. For nitrogen c_(v) = 0.177 cal cdot g^(-1) cdot^(@)C^(-1) and c_(p) = 0.248 cal cdot g^(-1) cdot^(@)C^(-1) .

The temperature of 10 g nitrogen gas is increased from 20^(@)C to 120^(@)C (ii) at constant pressure. Find out the amount of heat supplied, increase in internal energy and external work done in the case. For nitrogen c_(v) = 0.177 cal cdot g^(-1) cdot^(@)C^(-1) and c_(p) = 0.248 cal cdot g^(-1) cdot^(@)C^(-1) .

"cal.g"^(-1).^(@)C^(-1) is unit of

What is the amount of work done to convert 40 g of ice at -10^(@)C into steam at 100^(@)C ? Specific heat of ice = 0.5 cal cdot g^(-1) cdot ^(@)C^(-1) , latent heat of fusion of ice =80 cal cdot g^(-1) , latent heat of steam = 540 cal cdot g^(-1), J = 4.2 xx 10^(7) erg cdot cal^(-1) .

CHHAYA PUBLICATION-FIRST AND SECOND LAW OF THERMODYNAMICS-Exercise - Problem Set - I (Marks 2)
  1. A 150 cm long glass tube, closed at both ends, is filled with leads ma...

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  2. If a lead bullet hits a wall, its temperature rises by 200^(@)C. What ...

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  3. What is the amount of work done to convert 40 g of ice at -10^(@)C int...

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  4. Water is falling from a waterfall on a non-conducting surface. If the ...

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  5. The height of a waterfall is 200 m. What will be the difference in tem...

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  6. A piece of lead is dropped to the ground from a height of 200 m. What ...

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  7. A body of mass 1 kg falls to the ground from a height of 1km. If the e...

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  8. A lead bullet stopped on hitting an iron plate at a velocity of 300 m ...

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  9. What will be the change in internal energy if 10 g of air is heated fr...

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  10. For an ideal gas, gamma = 1.4. Find out the two molar specific heats o...

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  11. Consider a Carnot cycle operating between T(1) = 500 K and T(2) = 300 ...

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  12. If coefficient of performance of a refrigerator is 5 and it operates a...

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  13. What amount of heat is to be supplied to 14 g of nitrogen in order to ...

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  14. A geyser heats water flowing at the rate of 3.0 litres per minute from...

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  15. What amount of heat must be supplied to 2.0 xx 10^(-2) kg of nitrogen ...

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  16. After detonation of an atom the ball of fire consisting of a spherical...

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  17. A sample of 100 gm of water is slowly heated from 27^(@)C to 87^(@)C. ...

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  18. Find the internal energy of air in a room of volume 40 m^(3) at 1 stan...

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