Temperature (C) Solubility (g per 100g water) R T

10 25.0 40.0

30 50.0 43.0

50 90.0 45.0

70 140.0 48.0

90 200.0 55.0

100 250.0 58.0

Determine the temperature at which the solubility's of R and T are equal.

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?