A 1.9 kg block of iron at 23 âC is rapidly heated by a torch such that 17 kJ is transferred to it. What temperature would the block of iron reach assuming the complete transfer of heat and no loss to the surroundings? If the same amount of heat was quickly transferred to a 890 g pellet of copper at 22 âC, what temperature would it reach before losing heat to the surroundings?

Express the final temperatures of the iron and copper in âC to two significant figures separated by a comma.

answer

watching

190

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Trinidad TremblayLv2

12 Jul 2019

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Join us on Discord

Chemistry Study Group

Join now

Related questions

A coffee-cup calorimeter contains 130.0 g of water at 25.3 âC . A 124.0-g block of copper metal is heated to 100.4 âC by putting it in a beaker of boiling water. The specific heat of Cu(s) is 0.385 J/gâ K . The Cu is added to the calorimeter, and after a time the contents of the cup reach a constant temperature of 30.3 âC .

Part A

Determine the amount of heat, in J , lost by the copper block. (3350 J)

Part B

Determine the amount of heat gained by the water. The specific heat of water is 4.18 J/gâ K . (2720 J)

Part C

The difference between your answers for (a) and (b) is due to heat loss through the StyrofoamÂ® cups and the heat necessary to raise the temperature of the inner wall of the apparatus. The heat capacity of the calorimeter is the amount of heat necessary to raise the temperature of the apparatus (the cups and the stopper) by 1 K . Calculate the heat capacity of the calorimeter in J/K .

Express your answer using two significant figures.

Part D

What would be the final temperature of the system if all the heat lost by the copper block were absorbed by the water in the calorimeter?

A coffee-cup calorimeter of the type shown in Figure 5.17 contains 150.0 g of water at 25.1 °C. A 121.0-g block of copper metal is heated to 100.4 °C by putting it in a beaker of boiling water. The specific heat of Cu(s) is 0.385 J/g-K. The Cu is added to the calorimeter, and after a time the contents of the cup reach a constant temperature of 30.1 °C.
(a) Determine the amount of heat, in J, lost by the copper block. (b) Determine the amount of heat gained by the water. The specific heat of water is 4.18 J/g-K. (c) The difference between your answers for (a) and (b) is due to heat loss through the Styrofoam^® cups and the heat necessary to raise the temperature of the inner wall of the apparatus. The heat capacity of the calorimeter is the amount of heat necessary to raise the temperature of the apparatus (the cups and the stopper) by 1 K. Calculate the heat capacity of the calorimeter in J/K. (d) What would be the final temperature of the system if all the heat lost by the copper block were absorbed by the water in the calorimeter?