Question

In a bomb calorimeter, the reaction vessel is surrounded by water that must be added for each experiment. since the amount of water is not constant from experiment to experiment, the mass of water must be measured in each case. the heat capacity of the calorimeter is broken down into two parts: the water and the calorimeter components. if a calorimeter contains 1.39 kg water and has a total heat capacity of 10.85 kj/°c, what is the heat capacity of the calorimeter components? the specific heat capacity of water is 4.18 j/g°c. heat capacity =______ kj/°c

Answer 1

To determine the heat capacity of the calorimeter components, convert the mass of water to grams, calculate the water's heat capacity, and subtract it from the total heat capacity of the calorimeter system, resulting in 5.0398 kJ°C.

Step-by-step explanation:

The question is about determining the heat capacity of the calorimeter components in a bomb calorimeter experiment when given the mass of water and the total heat capacity of the calorimeter system.

To find the heat capacity of the calorimeter components, we calculate the heat capacity of the water and subtract it from the total heat capacity of the system. The specific heat capacity of water is given as 4.18 J/g°C, and the mass of water is provided in kilograms, which must be converted to grams.

First, we need to transform the mass of the water from kilograms to grams: 1.39 kg × 1000 g/kg = 1390 g. Next, we calculate the heat capacity of the water using its specific heat capacity:

1390 g × 4.18 J/g°C = 5810.2 J°C or 5.8102 kJ°C.

After that, we subtract the heat capacity of the water from the total heat capacity of the calorimeter to find the heat capacity of the calorimeter components: 10.85 kJ°C - 5.8102 kJ°C = 5.0398 kJ°C.