2mol of biatomic (双原子) ideal gas changes from state A to B. If the process is unknown, but the pressures, volumes and temperatures at state A and B are known, we can find
A. the work done by the gas.
B. the change of the internal energy of the gas.
C. the heat transferred to the surroundings by the gas.
D. the mass of the gas.
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For a system of an ideal gas, in which process of the following that the heat absorbed by the system, the change of the internal energy and the work done toward the surroundings are negative?
A. Isochoric (等体) and pressure decreasing process.
B. Isothermal (等温) and expanding process.
C. Adiabatic and expanding process.
D. Isobaric (等压) and compressed process
For a system of an ideal gas, in which process of the following that the heat absorbed by the system and the work done toward the surroundings are positive?
A. Isochoric (等体) and pressure decreasing process.
B. Isothermal (等温) and expanding process.
C. Adiabatic and expanding process.
D. Isobaric (等压) and compressed process
For a system of an ideal gas, in which process of the following that the change of the internal energy is negative, however, the work done toward the surroundings is positive?
A. Isochoric (等体) and pressure decreasing process.
B. Isothermal (等温) and expanding process.
C. Adiabatic and expanding process.
D. Isobaric (等压) and compressed process
Determine which of the following statements is incorrect
A. The reversible process (可逆过程) must be a quasi-static process;
B. The quasi-static process (准静态过程) must be a reversible process;
C. The irreversible process must not find a process, which can completely restore the system and the surroundings;
D. The non-quasi-static process must be an irreversible process.
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