A quantity of steam (150 g) at 124°C is condensed, and the resulting water is frozen...

Question

Question

A quantity of steam (150 g) at 124°C is condensed, and the resulting water is frozen into ice at 0°C. How much heat was removed?

answer is in kcal

science physics

Answer 1

Answer #1

The amount of heat removed

Q = ms_steam ΔT + mLv + ms_wΔT + mLf

= m[ s_steam ΔT + Lv +s_w ΔT + Lf ]

= (0.15kg) [ (0.48 kcal/kg.C) (24) + 539 kcal /kg + (1.0)(100) + 79.7 kcal/kg ]

= 0.15 [ 11.52 + 539 + 100 + 79.7 ] = 109.53 kcal

Answer 2

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