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Exercise 10 During an isobaric transformation at 7 bars absolute, the volume of a certain mass of gas increases from 70 to 100 dm3. During this evolution, the internal energy of the gas increases by 20 kcal. One asks for the magnitude and the meaning of the quantity of heat which accompanies the evolution. 10 g of oxygen are heated from 20 to 100° C. under constant pressure. Calculate the corresponding entropy change. We give: Cp[O2(g)] = 29.26 J.K-1.mol-1

Exercise 10 During an isobaric transformation at 7 bars absolute, the volume of a certain mass of gas increases from 70 to 100 dm3. During this evolution, the internal energy of the gas increases by 20 kcal. One asks for the magnitude and the meaning of the quantity of heat which accompanies the evolution. 10 g of oxygen are heated from 20 to 100° C. under constant pressure. Calculate the corresponding entropy change. We give: Cp[O2(g)] = 29.26 J.K-1.mol-1

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Exercise 10 During an isobaric transformation at 7 bars absolute, the volume of a certain mass of gas increases from 70 to 100 dm3. During this evolution, the internal energy of the gas increases by 20 kcal. One asks for the magnitude and the meaning of the quantity of heat which accompanies the evolution. 10 g of oxygen are heated from 20 to 100° C. under constant pressure. Calculate the corresponding entropy change. We give: Cp[O2(g)] = 29.26 J.K-1.mol-1
Transcribed Image Text:Exercise 10 During an isobaric transformation at 7 bars absolute, the volume of a certain mass of gas increases from 70 to 100 dm3. During this evolution, the internal energy of the gas increases by 20 kcal. One asks for the magnitude and the meaning of the quantity of heat which accompanies the evolution. 10 g of oxygen are heated from 20 to 100° C. under constant pressure. Calculate the corresponding entropy change. We give: Cp[O2(g)] = 29.26 J.K-1.mol-1
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