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Specific Heat Capacity - General Chemistry - Solved Quiz

Exams, Chemistry

Post: December 23th, 2012
Description
This is short quiz. Answers are given in empty space. This solved quiz of chemistry includes: Specific Heat Capacity, Quantity of Heat Required, Initial Temperature, Sample of Graphite, Sample of Water, Heat Capacity of Lead, Equilibrium Temperature, Heat Changes
This is short quiz. Answers are given in empty space. This solved quiz of chemistry includes: Specific Heat Capacity, Quantity of Heat Required, Initial Temperature, Sample of Graphite, Sample of Water, Heat Capacity of Lead, Equilibrium Temperature, Heat Changes
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Contents
1. The specific heat capacity of aluminum is 0.900 J/g·K. What quantity of heat is required to heat 5.60 kg of aluminum from 20.0 °C to 358.7 °C? 2. The initial temperature of a 215-g sample of graphite (c = 0.720 J/g·K) is -82.1 °C. If the sample absorbs 15.2 kJ of heat, what is its final temperature? 3. What is the mass of a sample of water (c = 4.184 J/g·K) that loses 340 J of heat energy in cooling from 50.0 °C to 20.0 °C? 4. A 26.47-g piece of lead, initially at 89.98 °C, is dropped into 100. g of water at 22.50 °C. When the system reaches equilibrium, the temperature is 23.17 °C. What is the specific heat capacity of lead? 5. A piece of gold (c = 0.129 J/g·K) with a mass of 14.7 g is heated in boiling water to 99.5 °C and then dropped into a calorimeter containing 30.0 g of water at 19.6 °C. What equilibrium temperature will the system reach? ° 6. Using the information in Appendix IIB, calculate Δ H rxn for each of these reactions: a. b. c. d. CH4(g) + 2 O2(g) ..

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