A) How much energy is released when 25.0 g of steam condense to liquid H2O at 100°C?

B) If it takes 1215J of heat to raise the temperature of water 11.C, how much does the water weigh, in grams?
C) How many joules of heat does it take for 1200.00 grams of water to go from 65C to 98C?

1 answer

A) heat of vaporization * 25.0 g = ? Joules

B) mass * specific heat * 11ºC = 1215 J

C) 1200.00 g * specific heat * (98ºC - 65ºC) = ? J

you should be aware of significant figure rules in your answers