Thermodynamics And Thermometers Nagpayong High School Essay

510 words - 3 pages

General Chemistry II
Thermochemistry
Name:_________________________________________
Section: _____________ Score:______________
Date: _____________ (Wag mo ako lokohin! Wala ka nun. HAHAHAHAH)
Problem Set #1
1. A piece of an unknown metal weighs 550. g and requires 9.315 kJ of energy to increase its temperature from 22.0 °C to 65.2 °C. What is the specific heat capacity of the metal?
2. What is the final temperature of a 275 kg sample of water, initially at 19.5 °C, if 36.5 kJ of heat were added to it? The specific heat capacity of water is 4.18 J/g°C.
3. A 45.0 g piece of aluminum, which is initially at 19.5 °C, is placed in 180.0 g of water, which is initially at 95.1 °C. What is the final temperature of the mixture once the aluminum and water reach thermal equilibrium? The specific heat capacity of water is 4.18 J/g°C and that of aluminum is 0.24 J/g°C.
4. If a reaction produces 1.506 kJ of heat, which is contained in 30.0 g of water that is initially at 26.5 °C, what is the resulting temperature of the water? The specific heat capacity of the water is 4.18 J/g°C.
5. When 1.025 g of naphthalene, C10H8, burns in a bomb calorimeter, the temperature rises from 24.25 °C to 32.33 °C. Find the enthalpy of combustion of naphthalene. The heat capacity of the calorimeter was determined to be 5.11 kJ/°C.
6. Zinc metal reacts with hydrochloric acid according to the balanced equation:...

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