Practice problems II:

How much heat will be transferred to $7\mathrm{.}3$ kg of water at $100C$ to change it to water vapor

at $373$ K $?(16476\mathrm{.}1$ KJ$)$

Calculate the quantity of heat transferred from $7\mathrm{.}3$ kg of water vapor at $100C$ as it

changes to water at

How much heat is required to change $4\mathrm{.}3$ kg of water at $62C$ into water vapor at $100C.$

The specific heat of water is $4\mathrm{.}183k\frac{J}{k}gC.(10388\mathrm{.}61KJ)$

Water vapor, or steam as it is more commonly called, at $100C$ is cooled until it becomes

water at a final temperature of $8C.$ How much heat has been transferred out of the

steam$/$water if its mass is $18$ kg $?$ Express your answer in MJ$.(-47\mathrm{.}55$MJ$)$