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During a process, the internal enegry of...

During a process, the internal enegry of the system increases by `240kJ` while the system performed `90 kJ` of work on its surroundings. How much heta was transferred between the system and the surroundings during this process. In which direction did the heat flow?

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`DeltaU = q+w or 240 =q - 90 or q = 330 kJ`
Heat flows from surroundings to the system.
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