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9 Nov 2019
Two experimental runs are performed to determine the calorimetric properties of an alcohol that has a melting point of -10 degrees C. In the first run, a 200-g cube of frozen alcohol, at the melting point, is added to 300-g of water at 20 degrees C in a styrofoam container. When thermal equilibrium is reached, the alcohol-water solution is at a temperature of 5.0 degrees C. In the second run, an identical cube of alcohol is added to 500-g of water at 20 degrees C and the temperature at thermal equilibrium is 10 degrees C. The specific heat of water is 4190 J/kg*K. Assume that no heat is exchanged with the styrofoam container and with the surroundings. Find the heat of fusion of the alcohol.
Two experimental runs are performed to determine the calorimetric properties of an alcohol that has a melting point of -10 degrees C. In the first run, a 200-g cube of frozen alcohol, at the melting point, is added to 300-g of water at 20 degrees C in a styrofoam container. When thermal equilibrium is reached, the alcohol-water solution is at a temperature of 5.0 degrees C. In the second run, an identical cube of alcohol is added to 500-g of water at 20 degrees C and the temperature at thermal equilibrium is 10 degrees C. The specific heat of water is 4190 J/kg*K. Assume that no heat is exchanged with the styrofoam container and with the surroundings. Find the heat of fusion of the alcohol.
Sixta KovacekLv2
1 Nov 2019
