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Marina86 [1]
3 years ago
14

In the diagram, the liquid is vaporizing at which point?

Physics
1 answer:
sasho [114]3 years ago
3 0
E is the vapourising state
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We can solve the problem by using the first law of thermodynamics, which states that:
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In our problem, the heat absorbed by the system is Q=+194 kJ, while the work done is W=-120 kJ, where the negative sign means the work is done by the surroundings on the system. Therefore, the variation of internal energy is
\Delta U= Q-W=+194 kJ - (-120 kJ)=+314 kJ
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