4 (2 pts) A process in which no heat exchange between the system and the environ

Question

4 (2 pts) A process in which no heat exchange between the system and the environ- ment is (e) none of the above. (a) isochoric. (b) isothermal. (e) adiabatic. (d) isobaric. 5. (2 pts.) Two objects with different sizes, masses and temperatures are placed in thermal contact. The net flow of energy is (a) from the larger to smaller size object. (b) from the larger to smaller mass object. (c) zero, because they are in thermal contact. (d) from the larger to smaller temperature object. (e) none of the above. 6. (2 pts.) If an ideal gas is compressed isothermally, which of the following statements is true? (a) The internal energy of the gas increases. (b) Energy is transferred into the gas by heat. (c) The temperature of the gas remains constant. (d) No work is done on the gas. (e) More information is needed to draw any conclusion. (f) None of the above is true. 7. (2 pts.) Two different ideal gases, designated A and B, occupy flasks with identical volumes. They have the same initial pressures and temperatures. The same amount of thermal energy Q is transferred to each of them. The final pressure of gas A is greater than the final pressure of gas B. Which of the following statements could explain the discrepancy? (a) There are more moles of gas B than of gas A. (b) There are more moles of gas A than of gas B. (c) The molar specific heat of gas A is less than that of gas B. (d) Gas A is diatomic; gas B is monatomic. (e) none of the above. 8. (2 pts.) A process in which the pressure is kept constant is called (a) isochoric. (c) adiabatic. (e) none of the above. (b) isothermal. (d) isobaric.

Explanation / Answer

4.

When no heat is exchange between the system and environment the process called as – isothermal process.

5.

When two objects with different sizes, masses and temperature are placed in thermal contact. The net flow of energy is from the larger to smaller temperature object.

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