1. How much energy is absorbed when 25.0 g of ice at water at 0.0°C? The heat of fusion of ice is 80 cal/g. 2. How much energy is absorbed when the water at 0.0°C in Question 1 is heated to 100.0°C? The specific heat of water is 1.0 cal/g.°C. 3. How much energy is absorbed when the water at 100.0°C in Question 2 vaporizes to 100.0°C? The heat of vaporization of water is 540 cal/g.

1. How much energy is absorbed when 25.0 g of ice at water at 0.0°C? The heat of fusion of ice is 80 cal/g. 2. How much energy is absorbed when the water at 0.0°C in Question 1 is heated to 100.0°C? The specific heat of water is 1.0 cal/g.°C. 3. How much energy is absorbed when the water at 100.0°C in Question 2 vaporizes to 100.0°C? The heat of vaporization of water is 540 cal/g.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter14: Heat And Heat Transfer Methods

Section: Chapter Questions

Problem 30PE: (a) Calculate the rate of heat conduction through house walls that are 13.0 cm thick and that have...

See similar textbooks

Similar questions

(a) Calculate the rate of heat conduction through house walls that are 13.0 cm thick and that have an average thermal conductivity twice that of glass wool. Assume there are no windows or doors. The surface area of the walls is 120m2 and their inside surface is at 18.0C, while their outside surface is at 5.00C. (b) How many 1-kW room heaters would be needed to balance the heat transfer due to conduction?
Compare the SI units of specific heat and latent heat and explain any differences.
An underground gasoline lank can hold 1.00 103 gallons of gasoline at 52.0F. Suppose the tank is being filled on a day when the outdoor temperature (and the temperature of the gasoline in a tanker truck) is 95.0F. When the underground tank registers that it is full, how many gallons have been transferred from the truck, according to a non-temperature-compensated gauge on the truck? Assume the temperature of the gasoline quickly cools from 95.0F to 52.0F upon entering the tank.
One way to cool a gas is to let it expand. When a certain gas under a pressure of 5.00 106 Ha at 25.0C is allowed to expand to 3.00 times its original volume, its final pressure is 1.07 106 Pa. (a) What is the initial temperature of the gas in Kelvin? (b) What is the final temperature of the system? (See Section 10.4.)
An electrician is wiring new electrical outlets in a house and has stored a 50.0-m length of copper wire outside where the temperature is 15.0C. When the wire is brought inside and warmed to 23.0C, by what amount in centimeters will the wires length increase due to the temperature change? (See Section 10.3.)
Specific Heat Worksheet q=(mass) (Csp)(AT) Units for specific heat = J g. °C 1. What is the specific heat of a substance that absorbs 2.5 x 10³ joules of heat when a sample of 1.0 x 10 g of the substance increases in temperature from 10.0°C to 70.0°C? 2. How many grams of water would require 2.20 x 104 joules of heat to raise its temperature from 34.0°C to 100.0°C? The specific heat of water is 4.18 J/g °C 3. If 200. grams of water is to be heated from 24.0°C to 100.0°C to make a cup of tea, how much heat must be added? The specific heat of water is 4.18 J/g °C 4. A block of aluminum weighing 140. g is cooled from 98.4°C to 62.2°C with the release of 1080 joules of heat. From this data, calculate the specific heat of aluminum 5. A cube of gold weighing 192.4g is heated from 30.0°C to some higher temperature, with the absorption of 226 joules of heat. The specific heat of gold is 0.030 J/g °C. What was the final CS Stemperature of the soldamScanner `6
4. 100.0 g of 4.0°C water is heated until its temperature is 37°C. If the specific heat of water is 4180J/kg°C, calculate the amount of heat energy needed to cause this rise in temperature. 5. A 0.3 kg piece of copper is heated and fashioned into a bracelet. The amount of energy transferredby heat to the copper is 66,300 J. If the specific heat of copper is 390 J/kg celcius, what is the change of thecopper's temperature?
Q1. a) How much of oxygen gas can be heated from OC to 100C degrees by amount of heat 0.1 kcal. b) How much will the kinetic energy of gas molecules change if gas expands at constant pressure?
A graph of temperature versus time for a substance that has a mass of 2.00 kg is shown below. The sample is at a temperature of-10.0 degrees celsius and initially in the solid phase. Heat is added to the sample at a constant rate of 20.0 kj/minute. B& Care at a temperature of 119 degree Celsius. Answer the following questions: 1. What is the melting point of this substance? 2. What islare the phase/phases that exists/exist during the process from A to B and during the process from B to C? 3. Use the graph to calculate the specific heat for this substance in solid phase. 4.Use the graph to calculate the latent heat of fusion for this substance. Temperdture cc) B 120 + 100 80 60 40+ 20 + 12 4 6. 10 %3D 13 -20 Time (min) %3D F00
How much heat is required to change 100 lbs of ice at 10°F to steam at 212°F? Assume the following: specific heat of ice = 0.5 BTU/lb∙°F heat of fusion of ice = 144 BTU/lb specific heat of water = 1 BTU/lb∙°F heat of vaporization of water = 970 BTU/lb a. 125,000 BTU b. 150,000 BTU c. 130,500 BTU d. 110,500 BTU
If the heat is assumed to be generated 0.03 m below the skin, the temperature difference between the skin and the interior of the body would exist if the heat were conducted to the surface is 28 k°. What is the heat rate if the surface area of the body is 1.5m? and the coefficient of the thermal conductivity= 0.2watt/m.ko. 290 watt 310 watt 280 watt 260 watt
What is the amount of heat energy absorbed by a copper of mass 300g if its temperature raises by 12°C. (specific heat of copper is 390J/kg°C) Oa.2.37x103J O b.16.7x10 5J OC3.56x106J Od. 1404J