Please help with part a and b

Suppose $1\mathrm{.}00$ kg of water at $37\mathrm{.}5C$ is placed in contact with $1\mathrm{.}00$ kg of water at $17\mathrm{.}5C.$

Part $($a$)$

What is the change in energy $($in joules$)$ of the hot water due to the heat transfer when it is placed in contact with the cold water and allowed to reach enuilihrinm?

$Q_h=$ J$.$

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Submission$($s$)$ Remaining

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Part $($b$)$

What is the change in entropy in joules per kelvin due to this heat transfer?