Answer to Question #17613 in Molecular Physics | Thermodynamics for tory

Question

Kate has 2 gallons of cold water in a bucket. The temperature of the cold water is 10°C. But Kate wants the water to be at 40°C. So obviously Kate wanted to add some hot water to the bucket. Kate also knows that water from the hot-water tap is at 70°C. How much hot water would Kate add to the cold water in the bucket so that the mixture reaches the comfortable temperature of 40°C?