Use these relationships to determine the number of calories to change 1.2 kg of 100 degree Celsius boiling water to 1.2 kg of 100 degree Celsius steam.  Use these relationships to determine the number of calories to change 1.2 kg to 0 degree Celsius ice to 1.2 kg of 100 degree Celsius steam.

Three thermometers are in the same water bath. After thermal equilibrium is established, it is found that the Celsius thermometer reads 10 °C, the Fahrenheit thermometer reads 50 F, and the Kelvin thermometer reads 263 K.  Which one of the following statements is the most reasonable conclusion? All three thermometers are incorrect. The Celsius thermometer is incorrect. The Fahrenheit thermometer is incorrect. The three thermometers are at different temperatures. The Kelvin thermometer is incorrect.

An unknown substance has a mass of 0.250 kg and an initial temperature of 90.0°C. The substance is then dropped into a calorimeter made of aluminum containing 0.300 kg of water initially at 25.0°C (assume the water and calorimeter start in thermal equilibrium). The mass of the aluminum container is 0.200 kg, and the temperature of the calorimeter increases to a final equilibrium temperature of 32.0°C. Assuming no thermal energy is transferred to the environment, calculate the specific heat of the unknown substance.  The specific heat of water is 4186 J/(K*mol)  and aluminum is 900 J/(K*mol).

If the price electrical energy is $0.08 per kilowatt hour, what is the cost of using electrical energy to heat the water in a swimming pool (12.0 m x 9.00 m x 1.50 m) from 16 to 28 °C? Number Units the tolerance is +/-2%

On a trip, you notice that a 3.15-kg bag of ice lasts an average of one day in your cooler. What is the average power in watts entering the ice if it starts at O°C and completely melts to 0°C water in exactly one day? P = W

A jet of steam at 100°C is applied to a 2.00 kg block of ice at 0°C. How many grams of steam would be required to completely melt the ice assuming a complete transfer of thermal energy? nA d bloow olle boutaig erd 15000 lo yolla an ai e W lobin bna 1900 lo yolla ns e losbinom 4

When you jog, most of the food energy you burn above your basal metabolic rate (BMR) ends up as internal energy that would raise your body temperature if it were not eliminated. The evaporation of perspiration is the primary mechanism for eliminating this energy. Determine the amount of water you lose to evaporation when running for 58 minutes at a rate that uses 400 kcal/h above your BMR. (That amount is often considered to be the "maximum fat-burning" energy output. The latent heat of vaporization of water at room temperature is 2.5  106 J/kg.) A) _________ kgB)The metabolism of 1 gram of fat generates approximately 8.63 kcal of energy and produces approximately 1 gram of water. (The hydrogen atoms in the fat molecule are transferred to oxygen to form water.) What fraction of your need for water will be provided by fat metabolism?______________ %