A sheet of gold weighing 9.3 g and at a temperature of 15.2°C is placed flat on a sheet of iron weighing 20.5 g and at a temperature of 53.2°C.What is the final temperature of the combined metals? Assume that no heat is lost to the surroundings.

A hot lump of 42.4g of copper at an initial temperature of 64.7 °C is placed in 50.0 mL H2O initially at 25.0 °C and allowed to reach thermal equilibrium. What is the final temperature of the copper and water, given that the specific heat of copper is 0.385 J/(g·°C)?0.385 J/(g·°C)? Assume no heat is lost to surroundings.

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

thermometer A 58.2 g sample of polystyrene is put into a calorimeter (see sketch at right) that contains 300.0 g of water. The polystyrene insulated container sample starts off at 89.1 °C and the temperature of the water starts off at 19.0 °C. When the temperature of the water stops changing it's 23.0 °C. The pressure remains constant at 1 atm. water Calculate the specific heat capacity of polystyrene according to this experiment. Be sure your answer is rounded to the correct number of significant digits. sample a calorimeter J Ox10 g.°C ?

A sheet of metal weighing 275-g is heated to 100.0 °C and placed flat in 100.00 g bucket of water at 22.0 °C. What is the final temperature of the combined substances? Assume that no heat is lost to the surroundings. The specific heat capacity of the metal is 0.444 J/g.°C . The specific heat of water is 4.184 J/g.°C. Select one: O a. 61.0 °C Оъ. 82.4 °С O c. 79.2 °C d. 40.8 °C × О е. 39.6 °C

A 56.5 g sample of iron is put into a calorimeter (see sketch at right) that contains 300.0 g of water. The iron sample starts off at 86.7 °C and the temperature of the water starts off at 21.0 °C. When the temperature of the water stops changing it's 22.8 °C. The pressure remains constant at 1 atm. Calculate the specific heat capacity of iron according to this experiment. Be sure your answer is rounded to 2 significant digits. J 0₂-C x10 x thermometer insulated container water sample a calorimeter

The molar heat of solution of a substance is found to be +21.38 kJ/mol. The addition of 0.100 mol of this substance to 1.000L of water initially at 40.0 degrees celsius results in a temperature decrease. Assume the specific heat of the resulting solution to be equal to that of pure water. Find the final temperature of the solution (Also assume that the heat capacity of the calorimeter is negligible).

A 54.5 g sample of brass is put into a calorimeter (see sketch at right) that contains 300.0 g of water. The brass sample starts off at 95.8 °C and the temperature of the water starts off at 15.0 °C. When the temperature of the water stops changing it's 16.4 °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 2 significant digits. П J g.°C x10 X S thermometer insulated container water sample a calorimeter U!!! 0 C

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

A 52.0 g sample of quartz is put into a calorimeter (see sketch at right) that contains 300.0 g of water. The quartz sample starts off at 98.2 °C and the temperature of the water starts off at 19.0 °C. When the temperature of the water stops changing it's 21.3 °C. The pressure remains constant at 1 atm. Calculate the specific heat capacity of quartz according to this experiment. Be sure your answer is rounded to the correct number of significant digits. g.°C ? O