Q. Cube of ice is taken from the freezer at -8.5°C and placed in a 75-gram aluminum calorimeter filled with 300.0 grams of water at room temperature of 20.0°C. The final situation is observed to be all water at 17°C. What was the mass of the ice cube?
Q. An aquarium contains a 5-cm layer of water (n = 1.33) floating on top of carbon tetrachloride (n = 1.461). If the angle of incidence into the water from the air is 30, what is the angle of refraction into the carbon tetrachloride.