Search: the latent heat of fusion and the melting point of lead are 2.45 × 104 J/kg and 327°C

Number of results: 9,381

Science
I'm going crazy! The heat necessary to change the state of water between a solid and a liquid is called the latent heat of vaporization, latent heat of solidification, latent heat of fusion, latent heat of liquefaction, or none of the above. I thought it was none of the ...
Friday, December 8, 2006 at 11:25am by Pat

Chemistry
Dr. Bob, When I use the values that I have for latent heat of fusion and vaporization, I do not get the right answer. I have that latent heat of vaporization is 597.3 - 0.564T, and latent heat of fusion is 79.7 cal/gH2O.
Saturday, November 3, 2012 at 8:04pm by Paige

Physics
What is latent heat of vaporisation and latent heat of fusion?
Sunday, June 5, 2011 at 4:40am by Shruthi

physics
Calculate the number of Joules of heat required (Q), using the mass, specific heat of ice, temperature rise and latent heat of fusion. Q = M[10 C(ice) + Latent heat] = 1.00[10*2090 + 3.33*10^5] = 3.54*10^5 J Then divide that by the heating rate in Watts (J/s) for the answer in...
Tuesday, May 4, 2010 at 9:12pm by drwls

chem
im working on a lab in chemistry called measuring energy changes :Calorimetry how to you determine the molar latent heat of fusion of ice using q=mcT ?? why was the ice driedbefore it was placed in water? why is hot warer ysed rather than room temp? in which dirextion would ...
Thursday, February 11, 2010 at 10:20am by jess

Nsuk
(1)calculate the heat energy datas temperatures 100degree celciuse and 4degree celciuse,mass 0.5kg take latent heat of vapourisation 2.02times10raised to the power of minus6.(2)calculate the specific latent heat of fusion mass of calorimeter 0.01kg and mass of ice 0.09kg and 0...
Friday, February 22, 2013 at 6:34am by Saen

HELP URGENT Phyiics
What mass (in grams) of steam at 100°C must be mixed with 446 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 65.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and the latent ...
Friday, April 12, 2013 at 5:44am by HELP

physics
What mass (in grams) of steam at 100°C must be mixed with 446 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 65.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and the latent ...
Monday, April 1, 2013 at 8:07am by safc

physics
What mass (in grams) of steam at 100°C must be mixed with 341 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 57.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and the latent ...
Friday, April 15, 2011 at 8:28am by tim

science
When you freeze water, 80 calories of heat are released into the surroundings for every gram of water that freezes. This is known as the "latent heat of fusion" of water, which is 80 cal/g. Heat of fusion is a characteristic property. Theoretically, if you could &...
Monday, January 31, 2011 at 12:14am by Elizabeth

thermal physics
What mass (in grams) of steam at 100°C must be mixed with 340 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 12.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and the latent ...
Wednesday, March 25, 2009 at 7:15am by chirayu

Physics B
The overall equation is Q=mL (m is mass; L is the latent heat of fusion for water) *we are trying to find mass (m) *rearranging the equation m=Q/L To find Q: the heat that caused the ice to melt was produced by the friction...we can find the amount of energy (in Joules) by ...
Thursday, January 15, 2009 at 4:38pm by Ashley

Chemistry
to get the heat released or absorbed, Q = mc(T2-T1) where m = mass of substance (units in g) c = specific heat capacity (units in J/g-K) T2 = final temperature T1 = initial temperature **note: if Q is (-), heat is released and if (+), heat is absorbed now we can only apply ...
Thursday, March 31, 2011 at 1:49am by Jai

chemistry
You need the latent heat of fusion. You may have been given it with the question. http://en.wikipedia.org/wiki/Diethyl_ether_(data_page) has 7.19 kJ mol-1 so calculate the number of moles of diethyl ether relative molecular mass = 74.14 then multiply the number of moles by the...
Tuesday, May 4, 2010 at 11:06am by Dr Russ

Science
the latent heat of fusion
Friday, December 8, 2006 at 11:25am by Anonymous

Physical Science
to get the heat released or absorbed, Q = mc(T2-T1) where m = mass of substance c = specific heat capacity T2 = final temperature T1 = initial temperature **note: if Q is (-), heat is released and if (+), heat is absorbed now we can only apply this to substances that did not ...
Friday, April 8, 2011 at 12:16am by Jai

Physics
How much energy is required to change a 58 g ice cube from ice at −1◦C to steam at 101◦C? The specific heat of ice is 2090 J/kg ·◦ C and of water 4186 J/kg ·◦ C. The latent heat of fusion of water is 3.33 × ...
Wednesday, January 30, 2013 at 5:59pm by Tiffany

Physics
you need to first look for the latent heat of fusion (Lf) --- this is a constant, then use the formula: Q = m(Lf) where Q = heat in Joules, m = mass in grams *since it melted, it definitely absorbed/gained heat, thus Q is (+) so there,, :)
Thursday, October 28, 2010 at 8:54am by jai

Physics
You have left your bicycle outside in the backyard for three hours on a very cold day. Now you decide to go for a ride. The metal handlebars feel colder than the plastic hand-grips because: Question 4 options: A) The latent heat of fusion of the plastic is bigger than the ...
Monday, August 15, 2011 at 7:07pm by Skylar

college chemitsry
Heat= massice*LatentheatofFusion The latent heat of fusion of ice is 80cal/gram, or 334joules/gram
Wednesday, September 8, 2010 at 8:30pm by bobpursley

math
The latent heat of fusion (solid become liquid) for ice is 79.8 cal/gram. How much ice can we melt with 1000 calories of heat
Monday, October 6, 2008 at 6:39pm by Steve

phy
do i use latent heat of fusion value. my answer is 18.52kg
Saturday, December 4, 2010 at 2:05pm by mas

physics
If 50,000joules of heat is added to 10kg of lead at its melting point of 330 degrees celsius.If 2kg of lead melts,calculate the latent heat of fusion of lead
Thursday, January 12, 2012 at 10:20am by chrystabelle1

Physical Science
20 grams times the latent heat of fusion, which is 80 calories per gram for water.
Monday, July 12, 2010 at 8:35pm by drwls

physics
How much heat must be added to 0.55 kg of aluminum to change it from a solid at 180°C to a liquid at 660°C (its melting point)? The latent heat of fusion for aluminum is 4.0 105 J/kg.
Friday, December 10, 2010 at 4:00pm by maria

Chemistry - Heat of Fusion of Ice
Conclusion question(s) from a lab we did to find the heat of fusion of ice: Does the value obtained for the molar heat of fusion depend on the volume of water used? Does it depend on the mass of ice melted? Does it depend on the final temperature of the mixture? The heat of ...
Sunday, October 1, 2006 at 2:11pm by J.M.

physics
How much heat in joules must be added to 0.348 kg of aluminum to change it from a solid at 138 °C to a liquid at 660 °C (its melting point)? The latent heat of fusion for aluminum is 4.0 x 105 J/kg.
Tuesday, May 15, 2012 at 4:29am by RM

Physics
I'm understanding most of this physics, but here is one last question I would appreciate help on. Thank you! Okay, so the question involves a figure. A link to the question and the picture with it is below can be found by googling the question along with Holt physics. The ...
Friday, March 26, 2010 at 2:42pm by Demi

Physics: Capacitance of Capacitor
Capacitor A and capacitor B both have the same voltage across their plates. However, the energy of capacitor A can melt m kilograms of ice at 0 °C, while the energy of capacitor B can boil away the same amount of water at 100 °C. The capacitance of capacitor A is 8.4 &...
Friday, May 10, 2013 at 2:37pm by Phil-- HELP NEEDED ASAP

Chemistry
Just for your information, the heat of fusion and the heat of solidification are the same. Just like the heat of vaporization and heat of condensation are the same. The only difference is heat fusion is melting at the melting point and heat of solidification is the solidifying...
Wednesday, February 24, 2010 at 10:49pm by DrBob222

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

Physics
A 43 g ice cube at 0 C is placed in 882 g of water at 81 C. What is the final temperature of the mixture? The specific heat of water is 4186 J/kg · C and its latent heat of fusion is 3.33 × 105 J/kg . Answer in units of C
Tuesday, April 23, 2013 at 8:38pm by dallas

chemistry
q = mass x heat fusion 55,000 = mass x heat fusion. Look up heat of fusion (in Joules/g) and solve for mass in grams.
Sunday, February 1, 2009 at 9:23pm by DrBob222

Active physics
I think you mean heat, not hear. Add the heat required for the following steps: (1) heat ice from -25C to 0 C (2) melt the ice (3) heat water from 0 C to 100 C (4) vaporize the water to steam (5) heat the steam from 110 C to 119 C. (Assume constant pressure) You will need the ...
Monday, May 9, 2011 at 9:00am by drwls

science
10 grams of ice at 0 degree centigrade absorbs 5460 joules of heat to melt and change itno water at 50 degree centigrade.calculate the specific latent heat of fusion of ice?
Thursday, September 20, 2012 at 10:21am by Anonymous

science
an aluminium container of mass 100g contains 200 g of ice at -20'c heat is added to the system at the rate of 100 cal/sec. what will be the final tmperature of the mixture after 4 min? given:specific heat of ice:0.5 cal/gm'c ,latent heat of fusion:80 cal/gm and ...
Thursday, March 17, 2011 at 8:32pm by anu

Chemistry
GK's method will work but let me save you a step. The latent heat of fusion of water (the heat released when water turns to ice at 0 C) is 79.8 calories per gram. Many textbooks round it off to 80 cal/g. Multiply 79.8 by 25.0 grams for the answer.
Sunday, December 28, 2008 at 11:57pm by drwls

thermo
The sum of the heats gained will be zero. Heat gained by steam matter + heat gained by ice matter =0 m*Lv+m*cwater*(Tf-100)+m*Lf+m(Tf-0)=0 you know the two latent heats (vaporization, fusion, specific heat water) and mass divides out. Find Tf
Friday, November 5, 2010 at 1:42am by bobpursley

Physics
It takes 1110 calories of energy to melt a 185 gram lump of lead. What is lead's latent heat of fusion?
Monday, March 5, 2012 at 9:21pm by Tracy

physics
134 g of water at 7°C is added to ice at 0°C. If the final temperature of the system (which you can assume is isolated) is 0°C, determine HOW MUCH ICE MELTED. The specific heat of water is 4186 J/kg·°C. The latent heat of fusion for H2O is 335,000 J/kg.
Wednesday, November 14, 2012 at 3:37pm by Joseph

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
So am i supposed to know the latent heat of fusion of water and ice or is that something i look up/figure out? sorry physics is not my best subject...
Tuesday, January 22, 2013 at 5:44pm by Dawna

physics
Shouldn't the units of L (the latent heat of fusion) be kJ/kg? NOT kg/K Check the problem again. Something is wrong with those numbers.
Friday, December 9, 2011 at 11:29am by drwls

physics
Objects A and B have the same mass of 3.4 kg and are at their melting points. They melt when 4.9 × 104 J of heat is added to A and when 11 × 104 J is added to B. (a), (b) Determine the latent heat of fusion for the substance from which each object is made. (c) Find...
Wednesday, April 24, 2013 at 1:25pm by Anonymous

Chemistry
heat removed from water in going from 21.0 to zero C is mass x specific heat x delta T. mass = 33.6 g specific heat is 4.184 J/g*K delta T is 21.0 - 0. heat added to ice to melt it is mass x heat fusion. mass is the unknown. heat fusion is given. Note: you need to work in the ...
Monday, February 4, 2008 at 12:52pm by DrBob222

physics
Compute the amount of heat necessary to be removed from the Al and liquid H2O to reduce both to 0 C. If that heat can be absorbed by the melting of less than 150g or less of ice, then the equilibrium temperature is 0 C. If not, you will have to do some algebra to get the ...
Friday, January 13, 2012 at 1:46am by drwls

Chemistry
5.91 x 10^6J = [mass ice x specific heat ice x 14]+[(mass ice x heat fusion)]+[mass water x specific heat water x 13.7]. Change your 6.01 kJ/mol for heat fusion (I assume H2 stands for heat fusion) to J/g, substitute into the above and solve for grams ice. I get something like...
Saturday, April 3, 2010 at 3:46pm by DrBob222

physics
Years ago, a block of ice with a mass of about 22kg was used daily in a home icebox. The temperature of the ice was 0.0 degrees Celsius when delivered. As it melted, how much heat did a block of ice that size absorb? The latent heat of fusion of water is 3.34 x 10 ^ 5 J/kg. ...
Saturday, November 20, 2010 at 10:06am by Norah

math
Problem The latent heat of fusion (solid become liquid) for ice is 79.8 cal/gram. How much ice can we melt with 1000 calories of heat? Problem Which would require more heat, melting 500 g of 0 C ice or turning 500 g of 100 C water into steam? Problem A 500 g sample of an ...
Monday, October 6, 2008 at 6:39pm by sherri

chemistry
Convert 2.40 x 10^5 metric tons to grams. Then heat required is q = mass x heat fusion You have the mass, look up the heat of fusion of ice and do the calculation.
Wednesday, February 11, 2009 at 6:18pm by DrBob222

Chemistry
A quantity of ice at 0.0 degrees C was added to 33.6 of water at 21.0 degree C to give water at 0.0 degrees C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(g * degrees C) q = mass x specific heat x delta T? q = mass x heat...
Monday, February 4, 2008 at 4:42pm by Lauren

Physcial science
Note that Celsius is the correct spelling. q = mass x heat fusion. Look up the heat of fusion for ice (in joules/g). You have the mass. Calculate q, the heat required to melt the ice. Be careful that specific heat you use doesn't conflict with the units for mass.
Monday, November 3, 2008 at 5:53pm by DrBob222

physics
Assume all of the kinetic energy, (1/2) M V^2 = 8438 J, is used to melt the ice. Divide that energy by the latent heat of fusion, 3.3x10^5 J/kg. The answer will be in kg.
Sunday, December 16, 2007 at 8:37pm by drwls

physical science
q = mass water x heat fusion. q will be in the same units as heat fusion.
Tuesday, March 16, 2010 at 10:12pm by DrBob222

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
When a lead bullet hits a solid target at high speed, its entire kinetic energy is converted into heat. For simplicity, assume that all the heat is concentrated in the bullet rather than the target. If the bullet's initial temp. is 20` C, how fast should it be moving ...
Friday, February 19, 2010 at 11:13pm by elisabeth

College Physics
100 grams of molten lead (600oC) is used to make musket balls. If the lead shot is allowed to cool to room temperature (21oC), what is the change in entropy (in J/K) of the lead? (For the specific heat of molten and solid lead use 1.29 J/g oC; the latent heat of fusion and the...
Sunday, June 12, 2011 at 4:38am by Chris

Chemistry (Thermo)
b. q = mass x heat fusion q about 32,723,000 J heat fusion about 334 J/g Solve for mass ice. You should confirm the 334 value. c. q = [mass ice x heat fusion ice] + [mass water x specific heat water x delta T] Let mass ice = mass water = x and solve for x. d. Same procedure ...
Friday, September 10, 2010 at 10:25am by DrBob222

Science
Tf is final temperature. Hf is the latent heat of fusion for ice. Tf and tf are the same, final temp.
Wednesday, January 20, 2010 at 6:14pm by bobpursley

Chemistry
1. q = mass ice x heat fusion 2. q = mass H2O x heat vaporization 3. q = mass H2O x specific heat H2O x (Tfinal-Tinitial) 23. A Loooong problem. Here is the way you do it. Formula for q WITHIN a phase. mass x specific heat x (Tfinal-Tinitial). Formula for q at a phase change...
Tuesday, March 5, 2013 at 8:33pm by DrBob222

physics
How long would it take a 1 200 W heater to melt 1.00 kg of ice at -12.0°C, assuming all the energy from the heater is absorbed by the ice? (Assume the specific heat of the ice is 2 090 J/kg · °C and the latent heat of fusion of water is 3.33 105 J/kg.) what ...
Tuesday, May 4, 2010 at 9:12pm by olive

Chemistry
q1 = heat to raise T from 23.0C to 327 C. q1 = mass Pb x specific heat Pb x (Tfinal-Tinitial) q2 = heat to melt Pb q2 = mass Pb x heat fusion. Total = q1 + q2 I note you have mass in grams in specific heat (not listed) in J/g*C so that's ok. However, when you go to the ...
Sunday, November 4, 2012 at 10:30pm by DrBob222

Chemistry HEAT OF FUSION
What is the final temperature, in oC, after a 15.0 g piece of ice, at 0oC, is placed in a styrofoam cup with 128 g of water initially at 74.0oC. Assume there is no transfer of heat to or from the surroundings. The specific heat of water = 4.184 JK-1g-1 The heat of fusion of ...
Thursday, October 6, 2011 at 1:35pm by tanner

Chemistry
q = (mass ice x heat fusion) + [mass ice x specific heat H2O x Tfinal-Tinitial)] heat fusion is 80 cal/g
Thursday, January 24, 2013 at 8:07am by DrBob222

Will Someone please respond! Chem
q = mass ice x heat fusion = ? If you have others of a similar nature, they are At a phase change, mass x heat fusion at melting point OR mass x heat vaporization at boiling point.l WITHIN a phase, q = mass x specific heat in that hase x (Tfinal-Tinitial)
Friday, June 22, 2012 at 11:34am by DrBob222

physics
Entropy of melting A block of a certain substance (m = 0.3 kg) sits in a cold room at its melting point 170 K. A lab demonstrator supplies heat at a rate of 200 W for 140 seconds by focusing light on the block to (just) completely melt the block. (a) What is the latent heat of...
Saturday, March 27, 2010 at 4:54am by michael

Physics B
Since the surface is horizontal, all of the loss of kinetic energy is due to frictional heating. The loss of kinetic energy is (1/2)M(Vfinal^2 - Vinitial^2) = 538 Joules = 129 calories If all that heat went into melting the ice, the amount that melted is 129 calories divided ...
Thursday, January 15, 2009 at 4:38pm by drwls

Physics
How much energy is needed to melt 0.225 kg of lead so that it can be used to make a lead sinker for fishing? The sample has an initial temperature of 27.3 degrees celsius and is poured in the mold immediately after it has melted. Not sure if this is relevant to finding the ...
Tuesday, March 30, 2010 at 10:15pm by Kim

physics
0.1kg of ice initially at a temperature of -10 degrees Celsius is added to a cup with .5kg of water initially at 20 degrees Celsius. The water and ice are isolated thermally from their surroundings. The specific heat of ice is 2000 J/kgoC, the specific heat of water is 4186 J/...
Wednesday, November 17, 2010 at 7:38pm by Raquel

physics
Besides the heat energy needed to raise the temperature of the lead to the 327.4 C melting poing, you need to provide the heat of fusion of lead, in order to melt it. The heat of fusion of lead is 27 kJ/kg. See if that raises the required velocity enough to give the "...
Sunday, April 15, 2012 at 3:24am by drwls

physical science
Please note the correct spelling of Celsius. J = mass ice x heat of fusion of ice. Look up heat of fusion in your text or notes.
Thursday, October 2, 2008 at 5:36pm by DrBob222

chemistry
How much mass of ice is there? You need the specific heats of ice and of water; the heat of vaporization, and the heat of fusion to answer this question. C,ice = 0.5 Cal/g C C,water = 1.0 Cal/g C H,fusion = 80 Cal/g H,vaporization = 540 Cal/g For Joules, multiply each by 4.184...
Thursday, March 18, 2010 at 2:25am by drwls

College Physics
For each incremental heat loss dQ, there is an entropy loss of the lead that is equal to dQ/T, where T must be in Kelvin. Compute the total entropy loss in three steps: (1) liquid lead cooling from 873 to 600 C (2) molten lead turning to solid at a contant temperature of 600 K...
Sunday, June 12, 2011 at 4:38am by drwls

physics
if 1 kilogram of ice is dropped in 9 kilogram of water at 50 degree centigrade. what will be final temperature of water. while the latent specific heat of fusion of ice is 336000 joule/kilogram
Sunday, March 21, 2010 at 12:08pm by abid naeem

science
what would be the final amount of water in a mixture when 2kg ice at -20 degrees celsius is mixed with 5kg water at 20 degrees celsius? Given:specific heat capacity of ice=0.5/gram degree celsius,specific heat capacity of water=1cal/gram degree celsius,latent heat of fusion of...
Friday, May 14, 2010 at 9:13am by pramit

Physics
Assume all of the ice melts. (If it doesn't you will find out later when you compute the final temperature). Look up the specific heat of aluminum. It is 0.22 cal/C gm Assume the heat lost by the water and aluminum when being lowered to final temperature T equals the heat ...
Saturday, August 20, 2011 at 1:36pm by drwls

Chemistry
How much heat must be removed from the 25.6 g H2O @ 21.0.0 C to move it to 0.0 C. That will be q = heat to be removed = mass x specific heat water x delta T. q = 25.6 g x 4.18 x 21.0 = about 2000 J (but you need to do it exactly). Then 2000 J x 1 g/heat fusion = grams ice. You...
Wednesday, October 8, 2008 at 10:57pm by DrBob222

physics
Given: latent heat of fusion of water 3.33x10^5 J/kg. A 147 g cube of ice at 0 degress C is dropped into 1.3 kg of water that was originally at 79 degrees C. What is the final temperature of the water after the ice melts.
Tuesday, December 8, 2009 at 10:31pm by Ericka

chemistry
q naphthalene (note spelling)= mass x heat fusion. Then plug this q into q Na = mass x heat fusion and solve for mass.
Wednesday, June 23, 2010 at 1:11pm by DrBob222

Chemistry (PLEASE HELP)
"Nuclear fusion produces no long-lived radioactive by-products. " Perhaps it depends on wht you mean by 'long lived' and if only by-products from the actual fusion are considered. There are disposal considerations for radioactive waste from fusion. For info ...
Tuesday, April 19, 2011 at 7:58pm by DrRuss

Astronomy
The latent heat of melting is the amount of energy needed to convert a solid substance at its melting temper- ature to a liquid at the same temperature. For typical volcanic rocks, the latent heat of melting is around 5×105 J/kg, which means it takes 5×105 J to ...
Thursday, April 9, 2009 at 1:01am by Ashley

Check 1 question.
Yes, you are correct. The first one is heat fusion. The second is heat of combustion. The third is heat of decomposition. The fourth is heat of solution.
Friday, June 22, 2012 at 1:39pm by DrBob222

PHYSICS
The latent heat of fusion of water is 3.34 x 105 J/kg. A farmer places a barrel containing 1000 kg of water in his barn one winter's night. When the water cools to 0oC, it begin to freeze. How much heat does the water give out while it is freezing until it has all become ...
Monday, August 15, 2011 at 7:08pm by Maggie

Chemistry
heat=mass*HeatofVaporization http://www.engineeringtoolbox.com/fluids-evaporation-latent-heat-d_147.html
Wednesday, April 17, 2013 at 8:50pm by bobpursley

physics
How much heat must be added to 0.55 kg of aluminum to change it from a solid at 180°C to a liquid at 660°C (its melting point)? The latent heat of fusion for aluminum is 4.0x10^5 J/kg. I understand the Equation Q=mc times change it T would that be .55 times 4.0 x 10^5 ...
Friday, December 10, 2010 at 6:24pm by maria

Physical Science
(g steam x heat vap) + (mass ice x heat fusion) + [(mass steam H2O x specific heat x (Tfinal-Tinitial)] + [mass melted ice x specific heat x (Tfinal-Tinitial)]= 0 I don't know what units you ae using; you substitute them. (1g x -heat vap) + (xgrams x heat fusion) + [(1g x ...
Sunday, March 10, 2013 at 11:03pm by DrBob222

Chemistry
when it is solid, liquid, or gas, the heat involved is m*c*deltaTemp At the transition pointss, melting, and again at boiling, there is a heat L*mass where L, the latent heat per mass, is either Lv (vaporiation heat/gram) or Lf(melting heat/gram) We will be happy to critique ...
Sunday, September 30, 2007 at 9:21am by bobpursley

physics
An insulated Thermos contains 140 cm3 of hot coffee at 89.0°C. You put in a 11.0 g ice cube at its melting point to cool the coffee. By how many degrees (in Celsius) has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it ...
Sunday, December 4, 2011 at 8:00am by mar13

Physics
5) An insulated Thermos contains 190 cm3 of hot coffee at 79.0°C. You put in a 11.0 g ice cube at its melting point to cool the coffee. By how many degrees (in Celsius) has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it...
Sunday, November 14, 2010 at 3:21am by john

Physics
Nuts to the note. The sum of heats gained is zero. (some of the heats gained will be negative). Heat gained by ice to zeroC+heatgained by melted ice at 0C +heat gained by water in cup+ heatgained by aluminum=0 Now the algebra: .850*Cice*(0 - (-20)) + M*Hf+1.1cwater*(0-7)+....
Tuesday, January 22, 2013 at 5:44pm by bobpursley

college chemistry
4.6 moles x heat fusion. Remember to use the heat of fusion in cal/mole OR change the 4.6 moles H2O to grams. grams = moles x molar mass.
Sunday, October 16, 2011 at 7:04pm by DrBob222

chemistry
Given that the heat of fusion of water is -6.02 kJ/mol, that the heat capacity of H2O(l) is 75.2 kJ/mol*K and that the heat capacity of H2O(s) is 37.7 kJ/mol*K, calculate the heat of fusion of water at -11 K.
Wednesday, January 27, 2010 at 3:44pm by im lost

college chemistry
Given that the heat of fusion of water is -6.02 kJ/mol, that the heat capacity of H2O(l) is 75.2 kJ/mol*K and that the heat capacity of H2O(s) is 37.7 kJ/mol*K, calculate the heat of fusion of water at -11 K.
Sunday, January 24, 2010 at 6:22pm by i'm stuck

science
to get the heat released or absorbed, Q = mc(T2-T1) where m = mass of substance c = specific heat capacity T2 = final temperature T1 = initial temperature **note: if Q is (-), heat is released and if (+), heat is absorbed now we can only apply this to substances that did not ...
Friday, April 8, 2011 at 12:59am by Jai

Chemistry
Close but not quite right. I see you have used kJ/mol for heat fusion but J/g for specific heat water. Units must be consistent. I think the heat fusion is 333 J/g but check me out on that. For the mass of the melted ice don't you think that 23.5 g solid ice will produce ...
Friday, April 27, 2012 at 8:06pm by DrBob222

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Search: the latent heat of fusion and the melting point of lead are 2.45 &times; 104 J/kg and 327&deg;C

Search: the latent heat of fusion and the melting point of lead are 2.45 × 104 J/kg and 327°C