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Look at the change of state diagram from...

Look at the change of state diagram from gas to solid given here carefully, and answer the following questions.
a. During freezing, certain amount of heat is given out without any change in temperature. Which part of the graph shows this change?
b. During condensation, certain amount of heat is given out without any change in temperature. Which part of the graph shows this change?
c. Which point on the graph corresponds to
İ. condensation point? ii. freezing point?
d. What do ab and cd on the graph represent?

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