Question

How much heat is required to change 10 g of ice at exactly 0°C to steam at 100°C.

Answer 1

Total heat absorbed

$ΔH_{ fusion} ​ +ΔH _{temp.rise} ​ +ΔH _{vap.}$

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$=10×80+10×1×100+10×540\\=7200cal$