问题描述:
[单选]
1mol单原子分子理想气体,从273K,202.65kPa,经pT=常数的可逆途径压缩到405.3kPa的终态,该气体的ΔU为()。
A.1702J
B.–406.8J
C.406.8J
D.–1702J
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