-g sample of nt-pr rimeter conta ing 45.3 g of water at 13.48 Assume that the heat capacity of the calorimeter equals the heat capacity of the water it contains. The final temperature is 24.17 °C. Calculate the heat capacity of the metal and use the result to identify the metal.

Calculate the energy required to heat 157.0 g of graphite from 4.3 °C to 13.8 °C. Assume the specific heat capacity of - 1 - 1 graphite under these conditions is 0.710 J•g K. Round your answer to 2 significant digits. alo Ar Dlo

A 3.971 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of the calorimeter and its contents increase from 24.87 ∘C to 28.06 ∘C. The heat capacity (calorimeter constant) of the calorimeter is 36.35 kJ/ ∘C, what is the heat of combustion per gram of the material?

A 55.0 g sample of brass is put into a calorimeter (see sketch at right) that contains 100.0 g of water. The brass sample starts off at 86.7 °C and the temperature of the water starts off at 23.0 °C. When the temperature of the water stops changing it's 26.5 °C. The pressure remains constant at 1 atm. Calculate the specific heat capacity of brass according to this experiment. Be sure your answer is rounded to the correct number of significant digits. J 0- g-°C 0 x10 X thermometer. insulated container water sample a calorimeter

4 Having just invented a new type of calorimeter, Dr. Campbell needs to determine the heat capacity of the calorimeter.  She carries out the following experiment to do this: She puts 20.0 grams of water in her empty calorimeter and it is allowed to stabilize at a temperature of 25.0ºC.  She then adds 32.035 grams of water at a temperature of 83.2ºC to the calorimeter.  After a few minutes the final temperature of the calorimeter stabilizes at 41.6ºC.   Based on this experiment, what is the heat capacity of her calorimeter assuming units of J/ºC? Enter your answer with at least 3 sig figs.

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A 56.1 g sample of polystyrene, which has a specific heat capacity of 1.880 J-g °C-1 is put into a calorimeter (see sketch at right) that contains 250.0 g of water. The temperature of the water starts off at 24.0 °C. When the temperature of the water stops changing it's 29.8 °C. The pressure remains constant at 1 atm. Calculate the initial temperature of the polystyrene sample. Be sure your answer is rounded to the correct number of significant digits. °C thermometer. insulated container water sample. a calorimeter 區 OU Ar

A student is attempting to determine the heat capacity of a Styrofoam cup calorimeter by pouring hot water into a Styrofoam cup containing cold water. The student determined the mass of the cold water to be 21.2455 g and its initial temperature to be 20.36 °C. The mass of the hot water was 24.2646 g and its initial temperature as 34.54 °C. The final temperature of the water after mixing was determined to be 24.57°C. The specific heat capacity of the water is 4.184 J/(g•°C). What is the heat capacity of the Styrofoam cup calorimeter? Assume the temperature of the calorimeter is the same temperature as the cold water. 4.184 J/°C 132.5 J/°C

I A sample of aluminum, which has a specific heat capacity of 0.897 J.g .°C is put into a calorimeter (see sketch at right) that contains 100.0 g of water. The aluminum sample starts off at 85.5 °C and the temperature of the water starts off at 16.0 °C. When the temperature of the water stops changing it's 23.3 °C. The pressure remains constant at 1 atm. Calculate the mass of the aluminum sample. Be sure your answer is rounded to the correct number of significant digits. thermometer. insulated container water sample a calorimeter