Question

The aluminum cup inside your calorimeter weighs 39.96 g. You add 49.96 g of ice cold water to the calorimeter. You measure the temperature of the calorimeter to be 0.5oC just before your next addition. You then add 50.44 g of hot water and a 50.10 g metal object, all having an initial temperature of 69.5oC. After the calorimeter reaches thermal equilibrium, the final temperature is measured to be 36.1oC. Assume that: the calorimeter is completely insulated the heat capacity of the empty calorimeter is the heat capacity of the aluminum cup: 0.903 J g-1 oC-1. the density of water is: 1.00 g/mL. the heat capacity of water is: 4.184 J g-1 oC-1. Perform all calculations without rounding, but then provide your answer to the correct number of significant figures.

Part A

What is the change in heat, q, experienced by the cold water, in units of J?

Part B

What is the change in heat, q, experienced by the aluminum cup, in units of J?

Part C

What is the change in heat, q, experienced by the hot water, in units of J?

Part D

What is the change in heat, q, experienced by the metal object, in units of J?

Answer 1

Here we apply concept of calorimetry and heat balance equation. That is summation of change in heat of all individual elements will be zero.