Answer to Question #82278 in Molecular Physics | Thermodynamics for Mark

Question

How much energy is released when 130.00 g of steam at 103.0 °C if cooled to ice at
–12.5 °C? Please show work

Answer 1

Converting 100. g of ice at 0.00 °C to water vapour at 100.00 °C requires 301 kJ of energy.

There are three heats to consider:

q1 = heat required to melt the ice to water at 0.00 °C.

q2 = heat required to warm the water from 0.00 °C to 100.00 °C.

q3 = heat required to vapourize the water to vapour at 100 °C.