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April 18, 2014

Search: How much heat is required to warm 1.60 kg of sand from 20.0^\circ C to 100.0 ^\circ {\rm C}?

Number of results: 84,306

math
how many microseconds are in a minute. A microsecond is one millionth of a second there are 60 seconds in a minute. So 60 times one million is what? or (60)(1,000,000)=? got it thank you so much..
Tuesday, March 27, 2007 at 10:38pm by kg

Chemistry
11. Think 20. Actually, lawyer wise, it is false. specific heat content is the amount of heat required to raise a specific mass a specific increase in temperature. That being said, its units can be J/gC or kJ/kg-C or kJ/mole-C But in your text, I bet it is true, joules per gram-C
Monday, October 25, 2010 at 4:45pm by bobpursley

Chemistry
OK. You have 50,000 Joules of heat. How much heat do you need to move the temperature of the ice at -5.00 C to zero C? q = mass ice x specific heat ice x (0-(-5)) = ??. Solve for q and subtract joules from 50,000. What's left? Now how much does it take to melt 20 g ice? That's...
Saturday, December 11, 2010 at 8:50pm by DrBob222

physics
A 40-g block of ice is cooled to −71C and is then added to 590 g of water in an 80-g copper calorimeter at a temperature of 27C. Determine the final temperature of the system consisting of the ice, water, and calorimeter. (If not all the ice melts, determine how much ...
Friday, April 6, 2012 at 5:46am by kevin

physics
A 40-g block of ice is cooled to −71C and is then added to 590 g of water in an 80-g copper calorimeter at a temperature of 27C. Determine the final temperature of the system consisting of the ice, water, and calorimeter. (If not all the ice melts, determine how much ...
Wednesday, April 11, 2012 at 2:05am by anthony

Physics
A freezer has a coefficient of performance of 6.30. It is advertised as using 486 kWh/yr. Note: One kilowatt-hour (kWh) is an amount of energy equal to running a 1-kW appliance for one hour. a) On average, how much energy does it use in a single day? I got 4.79 x 10^6 J (b) On...
Wednesday, February 16, 2011 at 12:18am by Z32

physics
Show that 60.0 L of gasoline originally at 15.0C will expand to 61.1 L when it warms to 35.0C, how much gasoline has spilled by the time they warm to 35.0C ?
Tuesday, July 30, 2013 at 7:30pm by Justin

chemistry
oops here. When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 12.0 fluid ounce drink from 75F to 35F, if the heat capacity of the drink is 4.18 J/gC? (Assume that the heat transfer is 100% efficient.)
Wednesday, September 15, 2010 at 5:00pm by Rebekah

Chemistry
how much heat is required to vaporize 343 g of liquid ethanol at its boiling point?
Thursday, April 8, 2010 at 4:44pm by Anonymous

Chemistry 101-URGENT
How much heat is required to melt 43.5 g of ice at 0C?
Thursday, November 18, 2010 at 10:43pm by Cherly Young

chem
A long problem. How much do you know how to do? Can you calculate the heat required to convert ice to steam?
Wednesday, December 15, 2010 at 11:37am by DrBob222

Physics
How much heat is required to raise the temperature of 70 g of water from 20 C to 80 C?
Monday, January 17, 2011 at 12:43am by Abida

chemistry
how much heat is required to melt 15 g of ice which is at a temperature of 0 degrees celsius
Tuesday, July 24, 2012 at 12:49am by johny

chemistry
how much heat is required to vaporize 343g of liquid ethanol at its boiling point?
Monday, March 25, 2013 at 12:25pm by tanya

Physics
how much heat ir required to melt 100g of gold in 1063 celsius?
Monday, November 12, 2012 at 10:07pm by Anonymous

Physics
how much heat ir required to melt 100g of gold in 1063 celsius?
Monday, November 12, 2012 at 10:07pm by daniel

Physics
how much heat ir required to melt 100g of gold in 1063 celsius?
Monday, November 12, 2012 at 10:07pm by daniel

Physics
how much heat ir required to melt 100g of gold in 1063 celsius?
Monday, November 12, 2012 at 10:07pm by daniel

Physics
how much heat ir required to melt 100g of gold in 1063 celsius?
Monday, November 12, 2012 at 10:07pm by daniel

physics
When a 2.60-kg object is hung vertically on a certain light spring described by Hooke's law, the spring stretches 2.30 cm. (a) What is the force constant of the spring? (b) If the 2.60-kg object is removed, how far will the spring stretch if a 1.30-kg block is hung on it? (c) ...
Wednesday, April 21, 2010 at 2:49pm by alexandra

Physics
At a fabrication plant, a hot metal forging has a mass of 74 kg and a specific heat capacity of 430 J/(kgC). To harden it, the forging is quenched by immersion in 710 kg of oil that has a temperature of 32C and a specific heat capacity of 3000 J/(kgC). The final ...
Wednesday, March 13, 2013 at 6:39pm by Anna

physics
At a fabrication plant, a hot metal forging has a mass of 74 kg and a specific heat capacity of 430 J/(kgC). To harden it, the forging is quenched by immersion in 710 kg of oil that has a temperature of 32C and a specific heat capacity of 3000 J/(kgC). The final ...
Wednesday, March 13, 2013 at 6:50pm by Anna

physics
. A water heater can has a power of 350 W. It is placed in a container filled with 1 litres of water with a temperature of 40 C. The heater is then allow to run for 1 hour. How much water will there be left in the container after 1 hour? (Specific heat capacity of water = ...
Sunday, August 7, 2011 at 5:32am by justin

Physics ptoblem
At body temperature the latent heat of vaporization of water is Lv = 2.26 103 kJ kg−1. (a) A naked person with a surface area A = 1.55 m2 and a skin temperature c = 37.3 XC is in a sauna room at T = 82.0 XC. The person's skin has an emissivity e = 0.910. She ...
Sunday, May 2, 2010 at 3:11am by kelly

physics
Heat of fusion is the amount of heat energy required to change the state of a substance from solid to liquid. λ = 335000 J/kg is heat of fusion of water-ice c = 4185.5 J/(kgK) is heat capacity of water Q1 = λm1 Q2 =cm1 (t-t1) =cm1t Q3 = cm2 (t2-t) . Q1+Q2 = ...
Monday, April 9, 2012 at 12:25am by Elena

heat
how much heat energy is required to raise the temperature of 5 kilograms of coal from 20 degrees celsius to 220 degrees celsius? You will need the specific heat capacity for coal...you can look that up in a table in your text.. Heatenergy=masscoal*specificheatcoal*(change in ...
Tuesday, July 5, 2005 at 9:55am by vanice

Physics
Follow the following steps: 1. Calculate the ice block's mass from its volume and density. 2. Compute heat required to raise its temp. from -19.3 degC to 0 deg - Q1 3. Consider latent heat required to change the state from ice at 0 deg. to water at 0 deg. - Q2 3. Compute heat ...
Tuesday, July 31, 2012 at 8:08pm by Ajayb

physics
A transfer of heat occurs with a pot of 8.0 kg of water that changes from 400 degrees kelvin to 320 degrees kelvin. How much heat is absorbed or given off?
Sunday, October 19, 2008 at 7:58pm by sammi

Physics
How long would it take a kettle with a 1kW heating element to heat 1 litre of water? Watts = Joules / second Mass of 1 litre of water = 1kg 1 kW = 1 k Joule / second or 1000 joules/ second 1g of water needs 4.184J to raise the temperature by 1̊ c. Water ...
Wednesday, December 15, 2010 at 6:56am by Paul

phy
Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15.
Sunday, September 12, 2010 at 3:50pm by ami

phy
Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15.
Sunday, September 12, 2010 at 10:13pm by ami

Chem
heat to melt ice + heat to raise T of melted ice to final T + heat lost by water initially at 79 C. [mass ice x heat fusion] + [mass melted ice x specific heat H2O x (Tfinal-Tinitial)] + [mass warm water x specific heat H2O x (Tfinal-Tinitial)] = 0 Solve for Tfinal.
Friday, March 23, 2012 at 7:19pm by DrBob222

physics
At a fabrication plant, a hot metal forging has a mass of 78.5 kg and a specific heat capacity of 426 J/(kg C). To harden it, the forging is quenched by immersion in 788 kg of oil that has a temperature of 30.3 C and a specific heat capacity of 2770 J/(kg C). The final ...
Thursday, May 5, 2011 at 6:01pm by shaknocka

physics
At a fabrication plant, a hot metal forging has a mass of 66.8 kg and a specific heat capacity of 437 J/(kg C). To harden it, the forging is quenched by immersion in 785 kg of oil that has a temperature of 25.0 C and a specific heat capacity of 2770 J/(kg C). The final ...
Saturday, April 28, 2012 at 11:26pm by RC

Chemistry (check formula please)
how much energy (in kJ) is required to change the temp of 1.00 kg of Fe from 25.0 degrees celsius to 1515 degrees celsius? the specific heat capacity of iron is 0.449 J/g*K. this is the answer i got. q=(.449)(1.00)(1490)= 669.01 kJ
Monday, April 5, 2010 at 11:32am by Danielle

physics
how much heat is required to vaporize 7 grams of ice initially at 0 degrees celsius when the latent fusion of ice is 80 cal/g, the vaporization of water is 540 cal/g, and the specific heat of water is 1 cal/(g x C)?
Friday, February 19, 2010 at 11:03pm by elisabeth

physics
A 1.3 Kg block of ice is initially at a temp of -5 degrees celsius. If 7.5 *10^5 J of heat are added to the ice, what is the final temperature of the system? I multiplied 1.3 Kg of ice by the specific heat of ice (2090), then I divided by the amount of heat added. I came up ...
Friday, June 22, 2007 at 2:30pm by tasha

physics
The planet mars has a mass of 6042e23 kg and a radius of 3038e6 m. how much would a 60 kg person weigh on Mars compared to their weight on Earth? How heavy he would feel he weighed in kg on Mars?
Thursday, June 23, 2011 at 6:13pm by edward

Chemistry
The heat of vaporization of benzene, C6H6, is 30.8kJ/mol at its boiling point of 80.1 degrees celsius. How much energy in the form of heat is required to vaporize 102g of benzene at its boiling point? I know that the answer is 24.2kJ but i am not sure how to get this.
Sunday, February 5, 2012 at 12:16pm by Hannah

Chemistry
How much heat must be removed? That is q = mass H2O x specific heat H2O x (Tfinal-Tinitial) How much can 1 g ice remove? That's the heat fusion. g ice = q/heat fusion About 40 grams?
Tuesday, April 3, 2012 at 9:33pm by DrBob222

Physics
On a certain dry sunny day, a swimming pool's temperature would rise by 1.60C if not for evaporation. What fraction of the water must evaporate to carry away precisely enough heat to keep the temperature constant? (Lv =2430kJ/kg or 580kcal/kg)
Saturday, July 20, 2013 at 2:19pm by Alice

Science
recall that heat absorbed or released is given by Q = mc(T2 - T1) where m = mass (in kg) c = specific heat capacity (in J/kg-K) T = temperature (in C or K) *note: Q is (+) when heat is absorbed, and (-) when heat is released. #1. we just substitute. the c for water is equal to...
Sunday, October 23, 2011 at 12:56am by Jai

physics
how much heat is required to change 400g of ice at -20c into steam at 120c
Wednesday, October 6, 2010 at 5:05pm by steve

Cheistry
How much heat is required to melt 43.5g of ice at its melting point?
Thursday, November 18, 2010 at 9:03am by Yvone Miles

Chemistry
How much heat is required to melt 43.5g of ice at its melting point?
Thursday, November 18, 2010 at 9:04am by Yvone Miles

Chemistry
How much heat is required to melt 43.5g of ice at its melting point?
Thursday, November 18, 2010 at 9:04am by Yvone Miles

Physics
Two packing crates of masses m1 = 10.0 kg and m2 = 6.60 kg are connected by a light string that passes over a frictionless pulley as in the figure. The 6.60-kg crate lies on a smooth incline of angle 37.0.
Friday, October 7, 2011 at 7:46pm by Imani

physics
A hot iron horseshoe (mass = 0.43 kg), just forged (Fig. 14-16), is dropped into 1.60 L of water in a 0.26 kg iron pot initially at 20C. If the final equilibrium temperature is 26C, estimate the initial temperature of the hot horseshoe. Could someone please help me out with ...
Monday, April 23, 2012 at 2:35pm by Julie

physics
you take 250.0 g of ice from the refrigerator at -8.00 degrees celsius. how much heat does it take to warm it to room temperature, 20.0 degrees celsius?
Sunday, May 13, 2012 at 1:35pm by megan

chemistry
The solubility of cholesterol in 95% ethanol is 32.5 mg/mL at 37C and 11.5 mg/mL at 7C. How much 95% ethanol is required to dissolve 1 g of cholesterol at 37C? If that volume of warm, saturated solution is cooled in a refrigerator to 7C, how much cholesterol will crystallize?
Monday, September 28, 2009 at 10:22pm by lisa

Integrated Physics and Chemistry
Matching... Heat engine Heat pump Boiler Thermostat -a heating appliance that uses heat energy released from fossil fuels to warm water for use in radiant or convection heating systems -a appliacne that controls the maintenance temperature of a heating system -an appliance ...
Tuesday, April 19, 2011 at 10:02am by Ashley

Thermodynamics
In exercising, a weight lifter loses 0.100 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. The work done in lifting weights is 1.30 x 10^5 J. (a) Assuming that the latent heat of vaporization of perspiration is 2....
Monday, April 16, 2007 at 5:20pm by Louise

physics
A piston-cylinder assembly with the piston resting on a set of stops, contains 0.5 Kg of He gas intially at 100kPa and 25C. The mass of the piston and the effect of the atmospheric pressure is such that a pressure of 500kPa is required to raise it. How much energy must be ...
Monday, September 29, 2008 at 10:56am by Nayi

Physics
The chemical potential energy of a certain amount of gasoline is converted into kinetic energy in a truck that increases its speed from 0 mph to 30 mph. To pass another truck the driver accelerates from 30 mph to 60 mph. Compared to the energy required to go from 0 to 30 mph, ...
Monday, March 16, 2009 at 7:46pm by Harold

Physics
The chemical potential energy of a certain amount of gasoline is converted into kinetic energy in a truck that increases its speed from 0 mph to 30 mph. To pass another truck the driver accelerates from 30 mph to 60 mph. Compared to the energy required to go from 0 to 30 mph, ...
Tuesday, March 17, 2009 at 12:33am by Harold

PHYSICS
The chin-up is one exercise that can be used to strengthen the biceps muscle. This muscle can exert a force of approximately 800 N as it contracts a distance of 7.5 cm in a 78 kg male. How much work can the biceps muscles (one in each arm) perform in a single contraction? 1 J ...
Wednesday, October 27, 2010 at 5:13pm by Petrik

Physics
How much (in Celsius degrees) is the temperature of 1.3 kg of alcohol raised by adding 4.1 kcal of heat? The following piece of information may come in handy: specific heat of alcohol is 0.58 kcal/kgC.
Friday, January 17, 2014 at 6:27pm by Randall

Physics
How much (in Celsius degrees) is the temperature of 1.3 kg of alcohol raised by adding 4.1 kcal of heat? The following piece of information may come in handy: specific heat of alcohol is 0.58 kcal/kgC.
Friday, January 31, 2014 at 11:00am by Chelsea

Physics
How much (in Celsius degrees) is the temperature of 1.3 kg of alcohol raised by adding 4.1 kcal of heat? The following piece of information may come in handy: specific heat of alcohol is 0.58 kcal/kgC.
Monday, February 3, 2014 at 3:03pm by Riley

Chem
Calculate the amount of heat required to heat a 3.8 gold bar from 30 to 67. Specific heat capacity of gold is 0.128 .
Saturday, September 10, 2011 at 3:58pm by Anonymous

Chemistry
Are my answers correct? C6H14 + 19/2 O2 -> 6 CO2 + 7H2O enthalpy change = -4163 kJ a) if 0.537 mol of carbon dioxide is produced in the reaction represented by the equation above, how much heat is released by the reaction? Enthalpy change = 0.537 mol CO2 x -4163kJ/6 mol CO2...
Sunday, February 10, 2013 at 11:33pm by A Canadian

Chemistry
the sum of the heats gained is zero. heatmeltingcice+ heatheating water=0 .135*Hf+2.96*specificheatwater*(Tf-85)=0 notice I used masses in kg, so your heat of fusion needs to be in units of kj/kg, and specific heat needs to be in kJ/kg-C
Saturday, May 7, 2011 at 1:54am by bobpursley

Physics
Thank you for your clarification.:-) I wasn't sure if you would notice a post so far back - I'm new to this site. I am sorry to bother you again. I can post this as a new question if you would rather. But the next question is along the same lies, except this time it is a iron ...
Wednesday, September 23, 2009 at 4:07pm by Ceres

Science-Weather
Some ideas. With a warm front coming in don't you think there will be a warming trend? If you have some idea of how much warmer it is behind the warm front you might be able to talk about how much. Do you know the dew point? That might give you an idea of the high for the day ...
Monday, May 5, 2008 at 8:06pm by DrBob222

Chemistry
Hydrogen is burned in oxygen to release heat. How many grams of hydrogen gas must be burned to release enough heat to warm a 50.0 g block of iron, giving 5 mol of water? 2 H2(g) + O2(g) → 2 H2O(g) ΔH = −484 kJ Iron has a specific heat of 0.449 J/(gC).
Tuesday, June 7, 2011 at 8:22am by Lance

Chemistry
When ice melts, it absorbs 0.33 kJ/g. How much ice is required to cool a 11.0oz drink from 76F to 39F, if the heat capacity of the drink is 4.18J/gC ? (Assume that the heat transfer is 100% efficient.) I got 11 g, but I guess that's wrong...
Thursday, April 4, 2013 at 9:57pm by Jordann

Chemistry
heat gained by ice from -30 to 0C + heat gained by melting ice + heat gained by water from ice @ 0 C moving to higher T + heat lost by H2O @ 90C = 0 [mass ice x specific heat ice x (Tfinal-Tinitial)] + [mass ice x delta Hfusion] + [mass melted ice x specific heat H2O x (Tfinal...
Friday, February 24, 2012 at 12:47am by DrBob222

Science/Physics
The nerves in our skin do not sense temperature, they sense heat flow. If heat flow is great, we sense it as hot. If heat flow is outward, we sense it as cold. The seat has stored little heat, so touching it wont get much heat flow. The windshield actually has stored more heat...
Friday, December 9, 2011 at 6:18pm by bobpursley

Physics
My problem is as follows "A 3 kg brick is dropped from a height of 1.0 m onto a nail which is vertically stuck in a plank of wood. If the nail doesn't move in much, how much heat is produced in the system when the brick hits and sticks onto the top of the nail." I know PE is ...
Thursday, April 16, 2009 at 4:51pm by Brigid

physics
a 75kg skater is travelling at 15m/s stops suddenly on the ice. If the ice is at 0 degrees and it is assumed that all of the skaters energy is converted to heat, how much ice does he melt? (latent heat of fusion for water is 3.3x10^5 J/kg)
Sunday, December 16, 2007 at 8:37pm by Nick

Chemisrty
heat required is q. q = mass water x specific heat water x delta T. Now all you need is the heat released when a mole of CaCl2 dissolves.
Tuesday, February 23, 2010 at 1:33am by DrBob222

college chemistry
Calculate the amount of heat required to heat 80 grams of water from 10 to 53C. The specific heat capacity for water is 4.184 J/gC.
Tuesday, September 7, 2010 at 12:45am by summer

Physical Science
Calculate the amount of heat required to heat a 45 sample of ethanol from 11.0 to 19.0. Specific heat capacity of ethanol is 2.42 .
Tuesday, October 19, 2010 at 12:19pm by Lechile

chemistry
How much heat is required to convert 0.4 kilograms of ice at 0 degrees celsius to water at the same temperature?
Tuesday, March 1, 2011 at 3:51pm by Anonymous

Physics
How much heat energy is required to convert 0.1000kg of ice at -10.0 C into water at 50 C?
Thursday, December 8, 2011 at 2:37am by Dorrito

Chemistry
How much heat energy, in kilojoules, is required to convert 53.0 g of ice at -18.C to water at 25.0 C ?
Friday, December 9, 2011 at 6:57pm by Morgan

chem
how much heat is required to vaporize 34.8g of water at 100 degrees celcious?
Friday, November 16, 2012 at 12:46pm by law-rece

chem 101
how much heat is required to melt 25.6g of solid diethyl ether(at its melting point)
Thursday, December 6, 2012 at 6:14pm by to

chemistry homework help!!
How much heat is required to convert 72.4 of ethanol at -136 to the vapor phase at 78 ?
Sunday, February 26, 2012 at 12:57am by H92rib

chemistry
How much energy is required to heat 120.0g of water from 2.0c to 24.0c (Cp of H2O=4.184J/g
Thursday, December 1, 2011 at 11:07pm by robert

chemistry
How much energy is required to heat 120.0g of water from 2.0c to 24.0c (Cp of H2O=4.184J/g
Thursday, December 1, 2011 at 11:07pm by robert

Physics
Spent steam from an electric generating plant leaves the turbines at 120.0 degrees Celsius and is cooled to 90.0 degrees Celsuius liquid water by water from a cooling tower in a heat exchanger. How much heat is removed by the cooling tower water for each kilogram of spent ...
Tuesday, November 21, 2006 at 4:37pm by Erica

PHYICS
Two 0.64 kg basketballs, each with a radius of 13 cm, are just touching. Ignore any other gravitational interactions. (a) How much energy is required to change the separation between the centers of the basketballs to 1.0 m? in J (b) How much energy is required to change the ...
Thursday, March 17, 2011 at 8:56pm by Steve

physics
A skier of mass 70kg is pulled up a slope by a motor-driven cable. The acceleration of gravity is 9.8m/s^2. How much work is required to pull him 60m up a 30.7 slope (frictionless) at a constant speed of 3 m/s? answer in units of kJ. In this question, I think I gotta use mgh ...
Sunday, September 17, 2006 at 5:46pm by puff puff

Science
Calculate the heat required to raise the temperature of 10kg of copper from 20C to 30C (S.H.C. of copper = 400J/kg k).
Tuesday, February 25, 2014 at 8:26pm by Ebenezer

Quick Science Question
Did you read the first two paragraphs? "Hurricanes are intense low pressure areas that form over warm ocean waters in the summer and early fall. Their source of energy is water vapor which is evaporated from the ocean surface. "Water vapor is the "fuel" for the hurricanes ...
Sunday, July 24, 2011 at 4:27pm by Ms. Sue

physics
Suppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing but your keen physical abilities, a dixie cup, duct tape and a piece of string, you manage to build a refrigerator unit which can do the job. The temperature ...
Sunday, November 28, 2010 at 8:42pm by sarah

chemistry
Some properties of aluminum are summarized in the following list. normal melting point 658C heat of fusion 0.395 kJ/g normal boiling point 2467C heat of vaporization 10.52 kJ/g specific heat of the solid 0.902 J/gC (a) Calculate the quantity of energy required to heat 1.75 ...
Saturday, May 1, 2010 at 5:54pm by Jake

Chemistry
Some properties of aluminum are summarized in the following list. normal melting point 658C heat of fusion 0.395 kJ/g normal boiling point 2467C heat of vaporization 10.52 kJ/g specific heat of the solid 0.902 J/gC (a) Calculate the quantity of energy required to heat 1.75 ...
Saturday, May 1, 2010 at 6:46pm by Charles

Chemistry
Calculate the total quantity of heat required to convert 25.0 g of liquid CCl4(l) from 25.0C to gaseous CCl4 at 76.8C (the normal boiling point for CCl4)? The specific heat of CCl4(l) is its heat of fusion is and its heat of vaporization is
Tuesday, April 13, 2010 at 7:32pm by Bob

Chemistry
the specific heat of aluminum is 0.900 J/g degrees celsius. how much energy is required to heat 45.0g of aluminum from 20.0 degrees celsius to 50.0 degrees celsius. a. 2840 J b. 810 J c. 1220 J d. 2030 J
Sunday, October 16, 2011 at 9:15pm by Meg

Physics
I do not remember heats of fusion and specific heats of ice and water, look them up assuming all ice melts and water does not freeze: 15 liters = 15 kg of water ice warms , heat in = (sh ice)(20)(1kg) ice melts, heat in = (Hfusion)(1 kg) ice water warms, heat in = (sh water) (...
Monday, February 17, 2014 at 12:39pm by Damon

Chemistry
How much heat did the water lose? mass water x specific heat water x (Tfinal-Tinitial). How much heat did the ice gain? mass ice x heat fusion. The sum of those should be zero.
Wednesday, April 21, 2010 at 12:37am by DrBob222

physics
A weightlifter is trying to carry a 10 kg weight held over his head across the room. How much energy will be required to do this work on the 10 kg weight?
Monday, May 7, 2012 at 10:39pm by Anonymous

physics
A weightlifter is trying to carry a 10 kg weight held over his head across the room. How much energy will be required to do this work on the 10 kg weight?
Monday, May 7, 2012 at 10:07pm by Anonymous

chemistry
When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 12.0 fluid ounce drink from 75F to 35F, if the heat capacity of the drink is 4.18 J/gC? (Assume that the heat transfer is 100% efficient.) please explain realy realy well thanks:)
Wednesday, September 15, 2010 at 7:25pm by Rebekah

Physics
Refrigerator Suppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing but your keen physical abilities, a dixie cup, duct tape and a piece of string, you manage to build a refrigerator unit which can do the job. The ...
Sunday, November 28, 2010 at 8:05pm by BG

chemistry
how much heat is required to raise the temperature of a 35 gm block of aluminum from 125 to 322 degrees?
Monday, November 26, 2012 at 2:06pm by maryam

Science
Assume you can heat water with perfect insulation (all the heat from combustion of ethanol is transferred to water). What is the volume of ethanol required to heat 100 mL of water by 10 degrees C? (You will need to look up density of ethanol, specific heat capacity or water, ...
Thursday, March 21, 2013 at 2:08am by Alexandra

chem
How much heat is required to raise the temperature of 200 g CH3OH from 20 to 30 degrees and then vaporize it at 30 degrees. The molar heat capacity of CH3OH is 81.1 J/Mol/K. Okay...the answer is approximately around 254. It was a homework problem. The question is how do you ...
Monday, February 15, 2010 at 4:46pm by joseph

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