Concept explainers
Interpretation:
The energy content of grape-nuts cereal is to be calculated.
Concept introduction:
The bomb calorimeter is a constant volume calorimeter, which is used to measure the heat of combustion.
The relation between the heat change of the calorimeter and the heat change of the reaction is given as follows:
The heat change of the reaction in the calorimeteris calculated as follows:
Here,
The temperature change of the reaction is calculated as follows:
The energy content of a substance is calculated by dividing the heat released incombustion of the substance by its mass.
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Chemistry
- An unknown metal sample weighing 23.4 g and at a temperature of 100.0 °C was placed in 39.9 g of water in a calorimeter at 25.1 °C. At equilibrium, the temperature of the water and metal was 33.5 °C. What is the identity of the unknown metal (use Table 1 from Reading Section 9.1)? The specific heat of water is 4.184 J/g·°C. Group of answer choices copper aluminum lead gold ironarrow_forwardPlease don't handwrite solution. 5) What quantity of heat (in kJ) will be absorbed by a 31.5 g piece of aluminum (specific heat = 0.930 J/g・ °C) as it changes temperature from 23.0 °C to 67.0 °C? 7) When 1.831 grams of sucrose (Molar mass 342.3 g/mol) is burned in a bomb calorimeter, the temperature of the calorimeter increases from 22.410 °C to 26.630 °C. If the heat capacity of the calorimeter is 4.900 kJ/ °C, what is the heat of combustion of sucrose, in kJ/mol?arrow_forwardExercise 97 has a heat capacity of 6.66 KJ/ degree C.arrow_forward
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- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning