The triple point of water is the temperature at which all three phases of water can exist simultaneously. This temperature is 0.01 °C. Sample A is 50 g of ice, sample B is 50 g of liquid water and sample C is 50 g of water vapour. All three samples are at the triple point.
a. a Which sample has the most internal energy? Explain your answer.
b. b Which sample has the least internal energy? Explain your answer.