The amount of heat required to raise the temperature of 10 moles of water from 70𝐾 to 80𝐾 (molar heat capacity of water 75.24𝐽) is:
Correct answer: B. 7524𝐽
- A. 0.7524𝐽
- B. 7524𝐽
- C. 95.24𝐽
- D. 752.4𝐽
Explanation
We use the formula E= nC x (change in temperature) i.e 10 x 75.24 x 10 = 7524 J
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About Molar Specific Heat of a Gas
Molar specific heat is the heat required to raise the temperature of one mole of a gas by one kelvin, expressed through Q = nCΔT. Questions compare the constant volume value Cv with the constant pressure value Cp, apply the ideal gas relation Cp − Cv = R, and identify how the thermodynamic process affects heat capacity.
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