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2 cards from this section. Quick, good the night before a test.
What is bomb calorimetry used for?
Think about energy changes in reactions.
Define internal energy.
Consider energies associated with particles.
What is the purpose of a bomb calorimeter?
Consider what type of reactions it is designed to evaluate.
True or False: The heat capacity of a calorimeter is not necessary for calculating q_v.
Think about the importance of the calorimeter in measuring heat.
A bomb calorimeter has a heat capacity of 5000 J/°C. If the temperature rises from 25.0 °C to 35.0 °C after burning 1.5 g of a hydrocarbon, determine the energy released during combustion.
Focus on calculating the temperature change before applying the formula.
A sample of a fuel results in a temperature increase of 3.5 °C in a bomb calorimeter with a heat capacity of 7500 J/°C. If the number of moles of gas decreases during combustion, explain how you would compute the enthalpy change considering Δ(n_gas).
Clarify how to incorporate gas losses into the calculation for ΔH.
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