11.More Nrg _ Rates Questions (ANSWERS).pdf - SCH4U ENERGY CHANGES RATES OF REACTION 1 If EP decreases over time as the reaction proceeds then A EK

11.More Nrg _ Rates Questions (ANSWERS).pdf - SCH4U ENERGY...

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SCH4U ENERGY CHANGES & RATES OF REACTION 1. If EP decreases over time as the reaction proceeds then: A) EK increases as the total energy for an ideal system remains constant. B) If EK increases then the temperature will increase as it is a measure of the average EK. 2. Given that you have twice as much of object A it has the ability to absorb twice the amount of heat and given that it requires twice the heat to change a degree, then object A s temperature will increase only ¼ the amount of object B if they are exposed to the same temperature change. 3. Therefore you must remove 1.32 kJ of heat energy. 4. Therefore you can heat 49.6 g of water. 5. Remember that q metal = - q water A) Therefore 1.67 kJ of heat energy is transferred. B) Therefore the specific heat capacity of the metal is 4.65 J/g o C . 6. Remember that q metal = - q water A) Therefore 1.255 kJ of heat energy is transferred. B) Therefore the mass of the copper sample was 34.87 g .

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• Fall '16
• Maheshwari
• Chemistry, Hess Law, Thermochem

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