Question

how much heat is released in converting 5g of steam at 100°c to water at 30°c?Lsteam=540cal/g​

Answer 1

Answer:

Amount of heat required = Change the temp Of Ice from -10 C to 0 C + Heat required to melt the Ice + Heat required to increase the temperature of water from 0 to 100 C + Heat required to convert water  at 100 C to vapor at 100 C

=1×0.5[0−(−10)]+1×80+1×1×100+1×540=5+80+100+540=725cal