After 20 minutes, the mass of the ice has increased from 75 grams to 50 grams, which indicates that 25 grams of ice have melted. Since no water has evaporated, the mass of the liquid water can be calculated by adding the initial mass of liquid water (400 grams) and the mass of melted ice (25 grams), resulting in a total of 425 grams of liquid water at that time.
A 50 gram glass holds 400 grams of liquid water and 75 grams of ice. After 20 mins the mass of ice is 50 grams. In 1-2 sentences assuming no evaporation or sublimation has occurred, calculate the mass of the liquid water at this time and explain how this is found
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