Heat Capacity

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Heat Capacity Questions and Answers

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When 75.4 J of energy is absorbed by 0.25 mol of CCl4, what is the temperature change of CCl4? The specific heat capacity of CCl4 is 0.861 J/gC. The molar mass of CCl4 is 153.81 g/mol.
A 10 \ kg piece of aluminum (which has a specific heat of 900 \ J/kg C) is warmed so that its temperature increases by 5.0 ^oC. How much heat was transferred into it?
A copper colorimetric cup with a mass of 100 g contains 96 g of water at 13 C. If 70 g of a substance at 84 C is dropped into the cup, the temperature increases to 20 C. Find the specific heat capa...
How much heat does 25 g aluminum give off as it cools from 95 ^\circ C to 30 ^\circ C?
What is the mass of an aluminum sample in grams (specific heat = 0.901 J/gC) if the addition of 3.58 kJ of heat raises the temperature of the aluminum by 41.9 degrees Celsius?
An unknown sample is being evaluated in the lab. What is the specific heat capacity of the compound if it requires 112.36 J to raise the temperature of 104.2 grams of the unknown from 15.2 degree C...
A covered beaker of ethanol is sitting in a window in the sun. The temperature changes from 8.00 C to 16.00 C. If this requires 2.00 x 104 J of energy, find the amount of ethanol in the beaker in k...
A metal container, which has a mass of 9.4 kg contains 14.2 kg of water. A 1.7-kg piece of the same metal, initially at a temperature of 160.0^{\circ}C, is dropped into the water. The container and...
A water heater is operated by solar power. If the solar collector has an area of 5.25 m2, and the intensity delivered by sunlight is 475 W/m2, how long does it take to increase the temperature of 0...
How much heat must be added to 1 kg of 0 degrees Celsius water to turn it into water at 50 degrees Celsius? If the water had been ice at 0 degrees Celsius, would that increase, decrease, or not cha...
Body A has twice the mass and three times the specific heat of body B. They are supplied with equal amounts of heat. Body A experiences a temperature change \Delta T. What change in temperature is...
In the construction of bridges and skyscrapers, gaps must be left between adjoining steel beams to allow for the expansion and contraction of the metal due to heating and cooling. The temperature o...
A 125.0 gram sample of copper is heated form 298 K to 573 K. The specific heat of the copper is 0.0925 cal/g degree C, what is hear capacity of the copper, is this endothermic or endothermic?
An 11.6-kg block of ice has a temperature of -14.5^{\circ}C. The pressure is one atmosphere. The block absorbs 6.87 \times 10^6 J of heat. What is the final temperature in degrees Celsius of the li...
What would be the final temperature of the mixture when .5 g of ice at -10 degrees are mixed with 250g of water at 30 degrees centigrade?
A 500 g copper at 100^{\circ}C is placed in 200 g water at 25^{\circ}C which is contained in an aluminum calorimeter that has a mass of 400 g. If the final temperature of the whole system is 30^{\c...
A 0.60 kg chunk of ice has a temperature of -28.2 degrees C. The pressure is one atmosphere. Heat is added to the chunk until it is completely vaporized and the steam is at a temperature of 114.4 d...
How much energy is needed to increase the temperature of 500 g of lead from 20 degrees Celcius to 45 degrees Celcius? The specific heat capacity of lead is 128 J/kg/degrees Celcius.
What is the amount of heat required to raise the temperature of 50.0 g of aluminum by 10 degree C? a. 5.3 J b. 448.5 J c. .897 J d. 4.5 J
Consider a 28 g sample of an unknown metal alloy. If it takes 73 kJ of energy to raise the temperature of the sample by 26.7^{o} C, what is the specific heat capacity of the alloy?
If the air temperature is the same as the temperature of your skin (about 30 degrees Celcius), your body cannot get rid of heat by transferring it to the air. In that case, it gets rid of the heat...
An unknown mass of a certain solid, initially at 60 degrees C, is heated at a uniform rate. After 4.0 min the solid reaches its melting point of 80 degrees C, and it remains at that temperature for...
Why do some cooks put ice in the pot to cook meat? Explain, then prove your answer by solution.
Compute the amount of heat needed to raise 10 g of aluminum and 10 g of iron from 30 deg C to 60 deg C.
Your house has a voltage of 120 V. You want to estimate how much energy (in Joules) you use one morning. You wake up at 7 am and leave your place at 9 am. The appliances turned on in your kitchen a...
A hot iron horseshoe (mass=0.40 kg), just forged, is dropped into 1.35L of water in a 0.30 kg iron pot initially at 20.0^{\circ}C. If the final equilibrium temperature is 25.0^{\circ}C, estimate th...
The specific heat capacity of ice is about 0.5, cal/g C^{circ} . A) Supposing that it remains at that value all the way to absolute zero, calculate the number of calories it would take to change...
A swimming pool, 10.0 m by 4.0 m is filled to a depth of 3.0 m with water at a temperature of 20.2^\circ C. How much energy is required to raise the temperature of the water to 30.0^\circ C?
How much heat is required to raise the temperature of 19.7 g of water from -25 degree C to 115 degree C?
Assume the pressure is one atmosphere and determine the heat in joules required to produce 5.03, kg of water vapor at 100.0, C , starting with (a) 5.03, kg of water at 100.0, C and (b) 5....
A 0.500 kg block of metal with an initial temperature of 30^{\circ}C is dropped into a container holding 1.12 kg of water at 20.0^{\circ}C. If the final temperature of the block-water system is 20....
A 3.40 kg block of copper at a temperature of 74^{\circ}C is dropped into a bucket containing a mixture of ice and water whose total mass is 1.20 kg. When thermal equilibrium has reached the temper...
Exactly 143.0 J will raise the temperature of 10.0 g of a metal from 25.0^oC to 60.0 ^oC. What is the specific heat capacity of the metal?
What mass of ice at -14^{\circ}C will be needed to cool 200 cm^3 of an orange drink (essentially water) from 25^{\circ}C to 10^{\circ}C?
A heat transfer of 8.7 \times 10^5 J is required to convert a block of ice at -12^{\circ}C to water at 12^{\circ}C. What was the mass of the block of ice?
A 100, g aluminum calorimeter contains 250, g of water. The two substances are in thermal equilibrium at 10, C . Two metallic blocks are placed in the water. One is a 50, g piece of copper a...
Water has a specific heat of 4.186 J/(g^{\circ}C). How much heat is required to increase 10.0 g of water from 25.0^{\circ}C to 30.0^{\circ}C?
What is the heat required in kilocalories to convert 2 kg of ice at 0^{\circ}C completely into steam at 100^{\circ}C?
How much heat is needed to melt 20 \ kg of a solid material initially at -10^oC? Given: C_{material}=2500 \ J/(kg C^o), L_{material} =40 \times 10^4 \ J/kg
When 20 kJ of heat is removed from 1.2 kg of ice originally at -15^{\circ}C, what is the new temperature?
In an electric freezer, 400.0 g of water at 18.0^{\circ}C is cooled, frozen, and the ice is chilled to -5.00^{\circ}C. How much total heat was removed from the water?
A puddle filled with 20.00 kg of water is completely frozen to -6.0^oC in the middle of winter. How much heat must be absorbed by the puddle to melt the ice and warm the water up to 20.0^oC during...
(a) Two 36 g ice cubes are dropped into 300 g of water in a thermally insulated container. If the water is initially at 19^oC, and the ice comes directly from a freezer at -19^oC, what is the final...
A) How much heat is required to change a 35.8 g ice cube from ice at -12.7^{\circ}C to water at 45^{\circ}C? B) How much heat is required to change a 35.8 g ice cube from ice at -12.7^{\circ}C to s...
A woman finds the front windshield of her car covered with ice at -12.6^o C. The ice has a thickness of 4.80 \times10^{-4} \ m, and the windshield has an area of 1.25 \ m^2. The density of ice is 9...
A 1.50 \times 10^2 g piece of brass (specific heat capacity 3.80 \times 10^2 J/(kg^{\circ}C) is submerged in 400 mL of water at 27.7^{\circ}C. What is the original temperature of the brass if the m...
Aluminum is melted during the recycling process. a. How much heat must be transferred to each kilogram of aluminum to bring it to its melting point, 660 degrees Celsius, from room temperature, 20 d...
A bottle containing 3 kg of water at a temperature of 20 degrees Celsius is placed in a refrigerator where the temperature is kept at 3 degrees Celsius. How much heat is transferred from the water...
Steam is passed into 22 \ gm of water at 20^o C. The mass of water that will be present when the water acquires a temperature of 90^oC (Latent heat of steam is 540 \ cal/g) is: a. 24.83 \ gm b. 24...
How long would it take a kettle with a 1 \ kW heating element to heat 1 litre of water?
True or False: "The energy that is transferred as heat to or from the object with the larger heat capacity must be greater than the energy that is transferred as heat to or from the object with the...
A hot water tank of heat capacity 5000 \ J/K contains 10 \ kg of water at 25^o C. What is the time taken to raise the temperature of the water to 45 ^o C using a heater coil of power of 3.0 \ kW,...
How do you find the specific heat of a gas?
The specific heat of a substance at its boiling point or melting point: a) Is zero b) Is infinity c) Is negative d) Lies between 0 and 1
A copper mug has a heat capacity of 77.5 J/ ^{\circ}C. After adding hot water to the mug, the temperature of the mug changed from 77.0 ^{\circ}F to 185 ^{\circ}F. How much heat did the mug absorb f...
A 50.0 g silver spoon at [{MathJax fullWidth='false' 20\;\rm ^{\circ}C }] is placed in a cup of coffee at [{MathJax fullWidth='false' 90\;\rm ^{\circ}C }]. How much heat does the spoon absorb...
A solar collection has been installed to heat water. A large water tank has a volume of 5. 0\times 10^5 \ cm ^ 3. The area of the solar collector is 8 \ m ^ 2. ( 2 m by 3 \ m ). If the water in...
What is Mayer's relation? Derive Mayer's relation.
How much heat is required to convert 5.0 g of ice at 10.0 degree C to liquid water at 15.0 degree C? (Assume heat capacities are independent of temperature.)
When a 45.0 g sample of an alloy at 100.0 degree C is dropped into 100.0 g of water at 25 degree C, the final temperature is 37 degree C. What is the specific heat of the alloy?
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