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Heat Capacity Solutions Library

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178 solutions

Heat Capacity

Q. In this virtual lab you will use a Coffee cup calorimetry to determine the sepecific heat, c, of a metal.  Imagine that, in lab, you record the mas...

Solved • Oct 19, 2020

Heat Capacity

Q. The specific heat of water is 4.18 J/ (g ⋅ °C). Calculate the molar heat capacity of water.Express your answer to three significant figures and inc...

Solved • Jul 2, 2020

Heat Capacity

Q. The molar heat capacity of silver is 25.35 J/ mol ⋅ °C. What is the specific heat of silver?Express your answer with the appropriate units.Parts B ...

Solved • Jul 2, 2020

Heat Capacity

Q. The molar heat capacity of silver is 25.35 J/ mol ⋅ °C. How much energy would it take to raise the temperature of 11.4 g of silver by 12.8 °C?Expre...

Solved • Jul 2, 2020

Heat Capacity

Q. It takes 52.0 J to raise the temperature of an 11.4 g piece of unknown metal from 13.0 °C to 24.1 °C. What is the specific heat for the metal?Expre...

Solved • Jul 2, 2020

Heat Capacity

Q. Raising the temperature of 32.0 g of a particular metal by 25 °C required 456 J of heat. What is the most likely identity of this metal?Enter the a...

Solved • Jul 2, 2020

Heat Capacity

Q. Using the equation y = 25x + 0.015, where y represents specific heat and x represents the inverse of atomic mass, calculate the atomic mass of an e...

Solved • Jul 2, 2020

Heat Capacity

Q. In slope-intercept form, what is the equation for the line in Part B (specific heat vs. atomic mass–1)?Express your answer in terms of x and approp...

Solved • Jul 2, 2020

Heat Capacity

Q. Plot the graph of specific heat versus the inverse of atomic mass. Include five points, one for each of the five metals listed in the introduction....

Solved • Jul 2, 2020

Heat Capacity

Q. A linear plot refers to a straight line created when two variables are graphed. Use the data displayed in the table to determine which of the follo...

Solved • Jul 2, 2020

Heat Capacity

Q. A 1.5 kg block of iron at 36°C is rapidly heated by a torch such that 13 kJ is transferred to it. What temperature would the block of iron reach (a...

Solved • Jul 2, 2020

Heat Capacity

Q. Suppose 1 kg each of water (4.19 J/(g⋅°C)), brick (0.90 J/(g⋅°C)), iron (0.46 J/(g⋅°C)), and olive oil (1.79 J/(g⋅°C)) were held at the same initia...

Solved • Jun 30, 2020

Heat Capacity

Q. LP gas burns according to the following exothermic reaction: C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O (g) ΔH°rxn = - 2044 ( kJ)(a) What mass of LP g...

Solved • Jun 25, 2020

Heat Capacity

Q. Evaporating sweat cools the body because evaporation is an endothermic process:H2O(l) → H2O(g)                 ΔH°rxn = +44.01kJEstimate the mass o...

Solved • Jun 25, 2020

Heat Capacity

Q. Which of the following best defines specific heat? a. The amount of heat required to increase the temperature of 1 mol of a substance by 1 °C. b. T...

Solved • Apr 28, 2020

Heat Capacity

Q. Calculate q when 28.6 g of water is heated from 22.0°C to 78.3°C.(the specific heat capacity for water = 4.184 J/(g•°C).A. 0.385 kJ B. 1.61 kJ C. 6...

Solved • Apr 15, 2020

Heat Capacity

Q. If 100. J of heat energy are added to separate 50.0 g samples of gold (specific heat = 0.129 J g−1 °C−1), silver (specific heat = 0.234 J g−1 °C−1)...

Solved • Nov 29, 2019

Heat Capacity

Q. What is the specific heat capacity of graphite if it requires 266 J to raise the temperature of 15 grams of graphite by 25°C?A. 1.4 J/g°CB. 0.71 J/...

Solved • Nov 21, 2019

Heat Capacity

Q. Which of the following substances (with specific heat capacity provided) would show the greatest temperature change upon absorbing 100.0 J of heat?...

Solved • Oct 25, 2019

Heat Capacity

Q. It takes 11.2 kJ of energy to raise the temperature of 145 g of benzene from 23.0°C to 68.0°C. What is the specific heat capacity of benzene? A) 5....

Solved • Oct 25, 2019

Heat Capacity

Q. If 266 J are required to increase the temperature of 15 g of graphite by 25°C, what is graphite’s specific heat capacity?A. 0.71 J/g°C B. 0.85 J/g°...

Solved • Oct 9, 2019

Heat Capacity

Q. It takes 11.2 kJ of energy to raise the temperature of 145 g of unknown substance X from 25.0 °C to 70.0 °C. What is the specific heat of X (J g–1 ...

Solved • Oct 4, 2019

Heat Capacity

Q. What is the enthalpy change (in kJ) of a chemical reaction that raises the temperature of 250.0 ml of solution having a density of 1.25 g/ml by 7.8...

Solved • Sep 24, 2019

Heat Capacity

Q. How much heat (kJ) is needed to raise the temperature of 100.0 grams of water from 25.0°C to 50.0°C?

Solved • Aug 7, 2019

Heat Capacity

Q. Which of the following (with specific heat capacity provided) would show the smallest temperature change upon gaining 200.0 J of heat?a. 50.0 g Al,...

Solved • Aug 6, 2019

Heat Capacity

Q. Ethyl chloride (C2H5Cl) boils at 12 oC. When liquid C2H5Cl under pressure is sprayed on a room-temperature (25 oC) surface in air, the surface is c...

Solved • Nov 27, 2018

Heat Capacity

Q. Spilling room-temperature water over your skin on a hot day will cool you down. Spilling vegetable oil (of the same temperature as the water) over ...

Solved • Nov 27, 2018

Heat Capacity

Q. SubstanceSpecific heatcapacity, Cs (J/(g oC))*ElementsLead0.128Gold0.128Silver0.235Copper0.385Iron0.449Aluminum0.903CompoundsEthanol2.42Water4.18Ma...

Solved • Nov 12, 2018

Heat Capacity

Q. To determine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measure its heat capacity. She first weighs the roc...

Solved • Nov 12, 2018

Heat Capacity

Q. To determine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measure its heat capacity. She first weighs the roc...

Solved • Nov 12, 2018

Heat Capacity

Q. To determine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measure its heat capacity. She first weighs the roc...

Solved • Nov 12, 2018

Heat Capacity

Q. An unknown mass of each substance, initially at 24.0˚C, absorbs 1950 J of heat. The final temperature is recorded. Find the mass of each substance:...

Solved • Nov 12, 2018

Heat Capacity

Q. An unknown mass of each substance, initially at 24.0˚C, absorbs 1950 J of heat. The final temperature is recorded. Find the mass of each substance:...

Solved • Nov 12, 2018

Heat Capacity

Q. An unknown mass of each substance, initially at 24.0˚C, absorbs 1950 J of heat. The final temperature is recorded. Find the mass of each substance:...

Solved • Nov 12, 2018

Heat Capacity

Q. An unknown mass of each substance, initially at 24.0˚C, absorbs 1950 J of heat. The final temperature is recorded. Find the mass of each substance:...

Solved • Nov 12, 2018

Heat Capacity

Q. How much heat is required to warm 1.50 kg of sand from 26.0 oC to 100.0 oC?        

Solved • Nov 12, 2018

Heat Capacity

Q. Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When ...

Solved • Nov 12, 2018

Heat Capacity

Q. A 1-kg cylinder of aluminum and 1-kg jug of water, both at room temperature, are put into a refrigerator. After one hour, the temperature of each o...

Solved • Nov 12, 2018

Heat Capacity

Q. Which sample is most likely to undergo the smallest change in temperature upon the absorption of 100 kJ of heat?a) 15 g waterb) 15 g leadc) 50 g wa...

Solved • Nov 12, 2018

Heat Capacity

Q. How much heat must be absorbed by a 21.0 g sample of water to raise its temperature from 21.0 oC to 51.0 oC? (For water, Cs =4.18 J/g oC.)

Solved • Nov 12, 2018

Heat Capacity

Q. The heat of vaporization of water at 373 K is 40.7 kJ/mol.Find q for the evaporation of 451 g of water at this temperature.

Solved • Nov 12, 2018

Heat Capacity

Q. Two identical refrigerators are plugged in for the first time. Refrigerator A is empty (except for air) and refrigerator B is filled with jugs of w...

Solved • Nov 12, 2018

Heat Capacity

Q. Starting from the relationship between temperature and kinetic energy for an ideal gas, find the value of the molar heat capacity of an ideal gas w...

Solved • Nov 12, 2018

Heat Capacity

Q. Use standard enthalpies of formation to calculate the standard change in enthalpy for the melting of ice. (The ΔH˚f for H2O(s) is –291.8 kJ/mol.) U...

Solved • Nov 12, 2018

Heat Capacity

Q. Palmitic acid (C16H32O2) is a dietary fat found in beef and butter. The caloric content of palmitic acid is typical of fats in general. Write balan...

Solved • Nov 12, 2018

Heat Capacity

Q. Evaporating sweat cools the body because evaporation is an endothermic process: H2O(l) → H2O(g); ΔH˚rxn= + 44.01 kJ. Estimate the mass of water tha...

Solved • Nov 12, 2018

Heat Capacity

Q. A kilogram of aluminum metal and a kilogram of water are each warmed to 75 oC and placed in two identical insulated containers. One hour later, the...

Solved • Nov 12, 2018

Heat Capacity

Q. How much heat is required to warm 1.50 L of water from 26.0 oC to 100.0 oC? (Assume a density of 1.0 g/mL for the water.)

Solved • Nov 12, 2018

Heat Capacity

Q. Suppose that 26 g of each of the following substances is initially at 28.0 oC. What is the final temperature of each substance upon absorbing 2.40 ...

Solved • Nov 12, 2018

Heat Capacity

Q. Suppose that 26 g of each of the following substances is initially at 28.0 oC. What is the final temperature of each substance upon absorbing 2.40 ...

Solved • Nov 12, 2018

Heat Capacity

Q. Suppose that 26 g of each of the following substances is initially at 28.0 ºC. What is the final temperature of each substance upon absorbing 2.40 ...

Solved • Nov 12, 2018

Heat Capacity

Q. What is heat capacity?

Solved • Nov 12, 2018

Heat Capacity

Q. Explain the difference between heat capacity and specific heat capacity.

Solved • Nov 12, 2018

Heat Capacity

Q. Explain how the high specific heat capacity of water can affect the weather in coastal versus inland regions.

Solved • Nov 12, 2018

Heat Capacity

Q. Suppose you are cold-weather camping and decide to heat some objects to bring into your sleeping bag for added warmth. You place a large water jug ...

Solved • Nov 12, 2018

Heat Capacity

Q. Suppose you are cold-weather camping and decide to heat some objects to bring into your sleeping bag for added warmth. You place a large water jug ...

Solved • Nov 12, 2018

Heat Capacity

Q. A 100.0-g bar of gold is heated from 25 oC to 50 oC, during which it absorbs 322 J of heat. Assume the volume of the gold bar remains constant.Supp...

Solved • Oct 31, 2018

Heat Capacity

Q. A 100.0-g bar of gold is heated from 25 oC to 50 oC, during which it absorbs 322 J of heat. Assume the volume of the gold bar remains constant.What...

Solved • Oct 31, 2018

Heat Capacity

Q. A 100.0-g bar of gold is heated from 25 oC to 50 oC, during which it absorbs 322 J of heat. Assume the volume of the gold bar remains constant.Base...

Solved • Oct 31, 2018

Heat Capacity

Q. A house is designed to have passive solar energy features. Brickwork is to be incorporated into the interior of the house to act as a heat absorber...

Solved • Oct 31, 2018

Heat Capacity

Q. The specific heat of octane, C8H18 (l), is 2.22 J/g K.How many J of heat are needed to raise the temperature of 82.0 g of octane from 11.2 oC to 25...

Solved • Oct 31, 2018

Heat Capacity

Q. The specific heat of octane, C8H18 (l), is 2.22 J/g K.Which will require more heat, increasing the temperature of 1 mol of C8H18 (l) by a certain a...

Solved • Oct 31, 2018

Heat Capacity

Q. ElementsCompoundsSubstanceSpecific Heat (J/g-K) SubstanceSpecific Heat (J/g-K) N2(g)1.04H2O(l)4.18Al(s)0.90CH4(g)2.20Fe(s)0.45CO2(g)0.84Hg(l)0.14Ca...

Solved • Oct 31, 2018

Heat Capacity

Q. What are the units of molar heat capacity?

Solved • Oct 31, 2018

Heat Capacity

Q. What are the units of specific heat?

Solved • Oct 31, 2018

Heat Capacity

Q. If you know the specific heat of copper, what additional information do you need to calculate the heat capacity of a particular piece of copper pipe?

Solved • Oct 31, 2018

Heat Capacity

Q. Two solid objects, A and B, are placed in boiling water and allowed to come to temperature there. Each is then lifted out and placed in separate be...

Solved • Oct 31, 2018

Heat Capacity

Q. Two solid objects, A and B, are placed in boiling water and allowed to come to temperature there. Each is then lifted out and placed in separate be...

Solved • Oct 31, 2018

Heat Capacity

Q. What is the specific heat of liquid water?

Solved • Oct 31, 2018

Heat Capacity

Q. What is the molar heat capacity of liquid water?

Solved • Oct 31, 2018

Heat Capacity

Q. What is the heat capacity of 175 g of liquid water?

Solved • Oct 31, 2018

Heat Capacity

Q. How many kJ of heat are needed to raise the temperature of 13.00 kg of liquid water from 24.5 oC to 46.5 oC?

Solved • Oct 31, 2018

Heat Capacity

Q. Table 5.2Specific Heats of Some Substances at 298 KElementsSubstanceSpecific Heat (J/g K)N2(g)1.04Al(s)0.90Fe(s)0.45Hg(l)0.14CompoundsSubstanceSpec...

Solved • Oct 31, 2018

Heat Capacity

Q. Table 5.2Specific Heats of Some Substances at 298 KElementsSubstanceSpecific Heat (J/g K)N2(g)1.04Al(s)0.90Fe(s)0.45Hg(l)0.14CompoundsSubstanceSpec...

Solved • Oct 31, 2018

Heat Capacity

Q. Assume that the kinetic energy of a 1400 kg car moving at 111 km/h is converted entirely into heat.What amount of water in liters could be heated f...

Solved • Oct 25, 2018

Heat Capacity

Q. A swimming pool, 10.0 m by 4.0 m, is filled with water to a depth of 3.0 m at a temperature of 20.2°C. How much energy is required to raise the tem...

Solved • Oct 19, 2018

Heat Capacity

Q. Consider a balloon filled with helium at the following conditions.313 g He 1.00 atm 1910. L Molar Heat Capacity = 20.8 J/°C • molThe temperature of...

Solved • Oct 19, 2018

Heat Capacity

Q. A balloon filled with 39.1 moles of helium has a volume of 876 L at 0.0°C and 1.00 atm pressure. The temperature of the balloon is increased to 38....

Solved • Oct 17, 2018

Heat Capacity

Q. A 5.00-g sample of one of the substances listed in Table 7‑1 was heated from 25.2°C to 55.1°C, requiring 133 J to do so. Which substance was it?

Solved • Oct 17, 2018

Heat Capacity

Q. An aluminum kettle weighs 1.05 kg.How much heat is required to heat this kettle from 23.0°C to 99.0°C if it contains 1.25 L of water (density of 0....

Solved • Oct 16, 2018

Heat Capacity

Q. An aluminum kettle weighs 1.05 kg.What is the heat capacity of the kettle?

Solved • Oct 16, 2018

Heat Capacity

Q. A piece of unknown solid substance weighs 437.2 g, and requires 8460 J to increase its temperature from 19.3°C to 68.9°C.What is the specific heat ...

Solved • Oct 16, 2018

Heat Capacity

Q. A piece of unknown substance weighs 44.7 g and requires 2110 J to increase its temperature from 23.2°C to 89.6°C.If it is one of the substances fou...

Solved • Oct 16, 2018

Heat Capacity

Q. A piece of unknown substance weighs 44.7 g and requires 2110 J to increase its temperature from 23.2°C to 89.6°C.What is the specific heat of the s...

Solved • Oct 16, 2018

Heat Capacity

Q. If 14.5 kJ of heat were added to 485 g of liquid water, how much would its temperature increase?

Solved • Oct 16, 2018

Heat Capacity

Q. How much would the temperature of 275 g of water increase if 36.5 kJ of heat were added?

Solved • Oct 16, 2018

Heat Capacity

Q. Four 50.0-g samples of different colorless liquids are placed in beakers at Tinitial = 25.0°C. Each liquid is heated until 450.0 J of heat has been...

Solved • Oct 16, 2018

Heat Capacity

Q. Ethylene oxide (EO) is prepared by the vapor-phase oxidation of ethylene. Its main uses are in the preparation of the antifreeze ethylene glycol an...

Solved • Oct 15, 2018

Heat Capacity

Q. A 27.7-g sample of the radiator coolant ethylene glycol releases 688 J of heat. What was the initial temperature of the sample if the final tempera...

Solved • Oct 15, 2018

Heat Capacity

Q. A 295-g aluminum engine part at an initial temperature of 13.00°C absorbs 75.0 kJ of heat. What is the final temperature of the part (c of Al = 0.9...

Solved • Oct 15, 2018

Heat Capacity

Q. Calculate q when 0.10 g of ice is cooled from 10.0°C to −75.0°C (c  ice = 2.087 J/g•K).

Solved • Oct 15, 2018

Heat Capacity

Q. Find q when 22.0 g of water is heated from 25.0°C to 100.0°C.

Solved • Oct 15, 2018

Heat Capacity

Q. Heat is applied to change the temperature of a water sample from 11.5°C to 25.0°C. If the sample welighs 86.45g, how much heat is needed? (a) 4.55 ...

Solved • Oct 2, 2018

Heat Capacity

Q. Calculate the amount of heat required to heat a 50 kg sample of ethanol from 13.0°C to 17.0°C. Specific heat capacity of ethanol is 2.42 J/g°C.

Solved • Sep 24, 2018

Heat Capacity

Q. Calculate the amount of heat required to raise the temperature of a 38 g sample of water from 9°C to 22°C. 

Solved • Sep 24, 2018

Heat Capacity

Q. A 27.72 g sample of a substance is initially at 21.1°C. After absorbing 2781 J of heat, the temperature of the substance is 161.3°C. What is the sp...

Solved • Sep 18, 2018

Heat Capacity

Q. A hot tub is filled with 450 gal of water. (Figure 1) Part B What is the mass, in kilograms, of water in the tub? Express your answer to two signif...

Solved • Sep 18, 2018

Heat Capacity

Q. Part AIf you used the 8400 kilojoules you expend in energy in one day to heat 60000 g of water at 10°C, what would be the rise in temperature? Expr...

Solved • Sep 18, 2018

Heat Capacity

Q. The specific heat of a certain type of metal is 0.128 J/(g •°C). What is the final temperature if 305 J of heat is added to 63.7 g of this metal in...

Solved • Sep 13, 2018

Heat Capacity

Q. The specific heat of a certain type of cooking oil is 1.75 J/(g • °C). How much heat energy (J) is needed to raise the temperature of 2.91 kg of th...

Solved • Sep 13, 2018