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How much total heat transfer is necessary to lower the temperature of 0.355 kg of steam...

How much total heat transfer is necessary to lower the temperature of 0.355 kg of steam from 125.5 °C to −19.5 °C, including the energy for phase changes?

How much time is required for each stage of this process, assuming a constant 815.0 W rate of heat exchange? Give the times in the order that the stages occur.

t1=

t2=

t3=

t4=

t5=

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