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Current Attempt in Progress Gas within a chamber passes through the cycle shown in the figure. Determine the energy added to the system as heat

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Current Attempt in Progress Gas within a chamber passes through the cycle shown in the figure. Determine the energy added to the system as heat during process CA if the energy added as heat QAB during process AB is 20 J, no energy is transferred as heat during process BC, and the net work done during the cycle is 12 J. Use a minus sign to indicate an energy decrease. Pressure Volume QCA i - 9

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