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April 19, 2014

Search: How much would you have to raise the temperature of a copper wire (originally at 20°C) to increase its resistance by 17 percent?

Number of results: 209,489

Chemistry
Imagine that your water heater has broken, but you want to take a bath. You fill your bathtub with 25kg of room-temperature water (about 25C). You figure that you can boil water on the stove and pour it into the bath to raise the temperature. How much boiling water would you ...
Wednesday, February 17, 2010 at 1:19pm by Anonymous

Chemistry
How much boiling water would you need in order to raise the bath to body temperature (about 37)? Assume that no heat is transferred to the surrounding environment. Imagine that your water heater has broken, but you want to take a bath. You fill your bathtub with 25kg of room-...
Thursday, November 4, 2010 at 8:35pm by Bella

Chemistry
How much boiling water would you need in order to raise the bath to body temperature (about 37)? Assume that no heat is transferred to the surrounding environment. Imagine that your water heater has broken, but you want to take a bath. You fill your bathtub with 25 of room-...
Thursday, November 4, 2010 at 4:06pm by Bella

chemistry
(a) A person drinks four glasses of cold water (3.0C) every day. The volume of each glass is 2.5x10^2 mL. How much heat (in kJ) does the body have to supply to raise the temperature of the water to 37C, the body temperature? (b) How much heat would your body lose if you were...
Monday, November 14, 2011 at 5:36pm by Amber

College Physics
How much would you have to raise the temperature of a copper wire (originally at 20 ∘ C) to increase its resistance by 30% ?
Tuesday, September 17, 2013 at 8:56pm by TaNay

Chemistry
If 7.60 kJ of heat is needed to raise the temperature of a sample of metal from 10.C to 25C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 35C to 53C?
Wednesday, March 13, 2013 at 7:10pm by Faith (Pls Help) (Would Trully Appreciate it)

CHEMISTRY
If 7.60 kJ of heat is needed to raise the temperature of a sample of metal from 10.C to 25C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 35C to 53C?
Wednesday, March 13, 2013 at 8:02pm by Faith (Pls Help) (Would Trully Appreciate it)

CHEM
If 7.60 kJ of heat is needed to raise the temperature of a sample of metal from 10.C to 25C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 35C to 53C?
Wednesday, March 13, 2013 at 8:08pm by Faith (Pls Help) (Would Trully Appreciate it)

physics
(a) How much heat is required to raise by 12.40C the temperature of 1.4 kg of water. (b) How much heat is required to raise by 12.40C the temperature of 1.4 kg of iron.
Monday, April 9, 2012 at 12:17am by JOHN

Physics
How much heat is required to raise by 10.30C the temperature of 1.2 kg of water? How much heat is required to raise by 10.30C the temperature of 1.2 kg of iron?
Monday, April 16, 2012 at 5:39pm by Alex

physics 11
By how much would 1200 W kettle, which is 72% efficient raise the temperature of 0.60 kg of water in 3.0 min?
Thursday, December 20, 2012 at 3:48am by sim

physics
An ice bag containing 0C ice is much more effective in absorbing heat than one containing the same amount of 0C water. (a) How much heat in kcal is required to raise the temperature of 0.700 kg of water from 0C to 27.0C? (b) How much heat is required to first melt 0.700 kg...
Friday, July 19, 2013 at 11:03pm by Eric

science
How much heat in kcal must be added to 0.32 kg of water at room temperature (20C) to raise its temperature to 36C?
Tuesday, October 26, 2010 at 3:15pm by Anonymous

science
Finishing his ginger ale, Ramesh stands at the party holding his insulated foam cup that has nothing in it but 0.100kg of ice at 0 degree celsius. How much heat must be gained by the ice in order for all of it to melt? How much more heat must be gained to raise the temperature...
Monday, January 9, 2012 at 1:51am by Debra

chemistry Ap
How much heat must be added to 50.0g of aluminum metal at 25 degrees C to raise its temperature to 125 degrees C? I have about 20 of these left so if you can do this and work it out and show me how you did it it would be great so I can use it as a guide for the next 19. Thanks.
Friday, February 8, 2008 at 11:41pm by mhaidar9108

Chemistry
The molar heat capacity of silver is 25.35 . How much energy would it take to raise the temperature of 9.50 of silver by 10.5?
Tuesday, June 7, 2011 at 8:23am by mimi

chemistry
How much boiling water would you need in order to raise the bath to body temperature (about 37\rm {}^\circ C)? Assume that no heat is transferred to the surrounding environment.
Wednesday, November 10, 2010 at 7:41pm by John

chemisrty
The molar heat capacity of silver is 25.35j/mol C . How much energy would it take to raise the temperature of 9.30 grams of silver by 12.0 C?
Tuesday, March 20, 2012 at 4:54pm by help

chemistry
How much heat is needed to raise the temperature of ice at -11.2 C to 0 C? That will x grams x 2.01 J/g*C x 11.2 = 22.51x. How much heat is needed to melt the ice? That will be xgrams x 333.6 J/g = 333.6x. How much heat is needed to raise the temperature from 0C to 29.8. That ...
Sunday, March 4, 2012 at 6:13am by DrBob222

physics
if you raise the temperature of 1000 grams of water by 17 degrees, how many calories of energy would you have added in
Wednesday, September 21, 2011 at 9:04pm by cece

Chemistry 105
The molar heat capacity of silver is 25.35 J/mol*C. How much energy would it take to raise the temperature of 12.0 g of silver by 14.6 degrees Celsius?
Saturday, April 2, 2011 at 1:22am by Katherine

chemistry
how much heat would it take to raise the temperature of 52.0 grams of water from 22.0 degrees celcius to 100.0 degrees celcius
Tuesday, June 28, 2011 at 2:52pm by Shelly

Math
Yes, but it depends upon who much they want to increase it. Does it have to reach 3.8? A student who has 85 credits and a GPA of 3.3 cannot raise the average to 3.8 while taking just 5 more credits. An A in a five credit course would only raise the GPA to 3.34. I am not ...
Monday, June 1, 2009 at 12:22am by drwls

Chemistry Honors 10th
Assuming that radiation with is used, that all the energy is converted to heat, and that 4.184 is needed to raise the temperature of 1.00 of water by 1.00 , how many photons are necessary to raise the temperature of a 300 cup of water from 20 to 90?
Wednesday, April 21, 2010 at 4:46pm by Anonymous

Physics
(a) How much heat in kcal must be provided for a 0.853 kg block of lead to raise the temperature of 0.015 kg block of ice from -5C to 0C? (b) How much heat in kcal must be provided for a 0.853 kg block of lead to melt a 0.015 kg block of ice from at 0C? (c) How much heat in...
Sunday, February 5, 2012 at 8:36am by Hannah

Melting Ice Chemistry
You have an ice cube (H2O) that weighs 5 grams and is at a temperature of -10 degrees Celsius. How much heat energy(in joules) is required to melt the ice cube and raise the temperature of the resulting liquid water to 15 degrees Celsius? A. 1803 J B. 2088.5 J C. 257.5 J D. ...
Friday, June 14, 2013 at 1:32am by Josh

Melting Ice Chemistry
You have an ice cube (H2O) that weighs 5 grams and is at a temperature of -10 degrees Celsius. How much heat energy(in joules) is required to melt the ice cube and raise the temperature of the resulting liquid water to 15 degrees Celsius? A. 1803 J B. 2088.5 J C. 257.5 J D. ...
Friday, June 14, 2013 at 1:42am by Josh

Melting Ice Chemistry
You have an ice cube (H2O) that weighs 5 grams and is at a temperature of -10 degrees Celsius. How much heat energy(in joules) is required to melt the ice cube and raise the temperature of the resulting liquid water to 15 degrees Celsius? A. 1803 J B. 2088.5 J C. 257.5 J D. ...
Friday, June 14, 2013 at 1:43am by Josh

Melting Ice Chemistry
You have an ice cube (H2O) that weighs 5 grams and is at a temperature of -10 degrees Celsius. How much heat energy(in joules) is required to melt the ice cube and raise the temperature of the resulting liquid water to 15 degrees Celsius? A. 1803 J B. 2088.5 J C. 257.5 J D. ...
Friday, June 14, 2013 at 1:49am by Josh

Melting Ice Chemistry
You have an ice cube (H2O) that weighs 5 grams and is at a temperature of -10 degrees Celsius. How much heat energy(in joules) is required to melt the ice cube and raise the temperature of the resulting liquid water to 15 degrees Celsius? A. 1803 J B. 2088.5 J C. 257.5 J D. ...
Friday, June 14, 2013 at 2:06am by Josh

Melting Ice Chemistry
You have an ice cube (H2O) that weighs 5 grams and is at a temperature of -10 degrees Celsius. How much heat energy(in joules) is required to melt the ice cube and raise the temperature of the resulting liquid water to 15 degrees Celsius? A. 1803 J B. 2088.5 J C. 257.5 J D. ...
Friday, June 14, 2013 at 2:28am by Josh

Chemistry
If 2.80 kJ of heat is needed to raise the temperature of a sample of metal from 10.C to 27C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 40.C to 58C?
Thursday, June 21, 2012 at 3:34am by Joseph

Chemistry
If 7.60 kJ of heat is needed to raise the temperature of a sample of metal from 10.C to 25C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 35C to 53C?
Wednesday, March 13, 2013 at 6:28pm by Faith

Chem
If 7.60 kJ of heat is needed to raise the temperature of a sample of metal from 10.C to 25C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 35C to 53C?
Wednesday, March 13, 2013 at 6:57pm by Faith

chemistry
If 3.50 kJ of heat is needed to raise the temperature of a sample of metal from 10.C to 30.C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 31C to 54C?
Friday, November 12, 2010 at 2:06pm by Delaney kidd

chemistry (for DrBob222)
Yes, NaOH is added to the water. How much will adding twice the mass of NaOH will change Q? I am asked what would have been the heat evolved based on my actual observations and what effect would this have on my calculation of (delta)H. Would saying "based on the assumption ...
Friday, July 18, 2008 at 6:02pm by Anonymous

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

physics
HOw much heait is needed to raise the temperature of 5 kg of water 5 degrees celsius
Sunday, December 2, 2012 at 10:07pm by Jaeda

chemistry
A swimming pool, 20.0 m 12.5 m, is filled with water to a depth of 3.73 m. If the initial temperature of the water is 17.7C, how much heat must be added to the water to raise its temperature to 28.7C? Assume that the density of water is 1.000 g/mL.
Saturday, March 26, 2011 at 11:44am by nicole

Chemistry
A swimming pool, 20.0 m 12.5 m, is filled with water to a depth of 3.73 m. If the initial temperature of the water is 18.5C, how much heat must be added to the water to raise its temperature to 28.5C? Assume that the density of water is 1.000 g/mL.
Wednesday, March 27, 2013 at 10:12pm by Chuck

chemistry
how much heat does it take to raise the temperature of 0.10 kg of gold bt 25 C?
Sunday, March 18, 2012 at 10:53am by Tawha

chemistry
how much heat does it take to raise the temperature of 0.10 kg of gold bt 25 C?
Sunday, March 18, 2012 at 10:54am by Tawha

PSC 101
How much heat is needed to raise the temperature of 130 g of copper from 31c to 77c ?
Monday, September 23, 2013 at 6:20am by jm1003

physics
Outside air generally contains some water vapor (typically 1-2% by mass). Does it take more, less, or the same heat to raise the temperature of 1kg moist air than is needed to raise the temperature of 1kg dry air by the same amount?
Tuesday, February 8, 2011 at 10:25am by Todd

Chemistry
OK but I think something is screwy. If 368,000 J for the 0.25g Na, then how much heat is required to melt all of the ice? That is q = mass ice x heat fusion (which I've changed to J/g = 334). q = 50g ice x 334 J/g = 16,700 J so all of the ice will melt and we have heat ...
Sunday, January 15, 2012 at 3:29pm by DrBob222

Chemistry
A swimming pool 20.0m *12.5 is filled with water to a depth of 3.5m. if the initial temperature of water is 18.4C how much heat must be added to the water to raise its temperature to 29.0C? Assume that the density of water is 1.000g/mL
Sunday, February 21, 2010 at 7:38pm by Anonymous

phy
How much heat is required to raise the body temperature of a 60.0-kg woman from 37.0 C to 38.2 C?
Wednesday, April 17, 2013 at 10:36am by jessica

chemistry
If 2.10 kJ of heat is needed to raise the temperature of a sample of metal from 10.C to 28C, how many kilojoules of heat will be required to raise the temperature of the same sample of metal from 34C to 57C?
Wednesday, October 6, 2010 at 3:03am by ruby

chemistry
Consider a room temperature 0.30M ammonia buffer at pH 9.5. As you raise the temperature of the buffer, would you expect the pH to change? Explain. (Pka of NH4+ is 9.26)
Sunday, March 7, 2010 at 4:21pm by julie

chemistry
Consider a room temperature 0.30M ammonia buffer at pH 9.5. As you raise the temperature of the buffer, would you expect the pH to change? Explain. (Pka of NH4+ is 9.26)
Sunday, March 7, 2010 at 4:21pm by julie

science
Assuming that radiation with a wavelength = 15.0 cm is used, that all the energy is converted to heat, and that 4.184 J is needed to raise the temperature of 1.00 g of water by 1.00 degree celcius, how many photons are necessary to raise the temperature of a 350 mL cup of ...
Friday, July 22, 2011 at 11:54pm by Breanna

Physics
How much energy (in cal) is required to raise the temperature of 15.0g of isopropyl alcohol from 10.0 C to 25.0 C?
Monday, September 3, 2012 at 11:54pm by Stacie

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

Physics
Assume the optimal coffee drinking temperature is 75C, and further assume coffee has the same heat capacity and density as water. a. How much energy is required to raise the temperature of 1 cup (0.237 liters) of coffee initially at 25C to the optimal temperature? b. How ...
Sunday, December 5, 2010 at 7:04pm by Steve

chemistry
Question Part Points Submissions Used A swimming pool, 20.0 m ✕ 12.5 m, is filled with water to a depth of 3.85 m. If the initial temperature of the water is 18.9C, how much heat must be added to the water to raise its temperature to 28.7C? Assume that the density of...
Tuesday, March 25, 2014 at 9:51pm by D

science
The heat capacity of water is quite large, meaning that relatively large amounts of energy are required to raise the temperature of water or to cool it. With very low amounts of moisture in the air, the air can heat up and cool down much faster (than if it had water in it); ...
Tuesday, May 19, 2009 at 11:31pm by DrBob222

Physical Science
how much heat must be added to 300g of water to raise its temperature from 20 to 80 degrees celcius?
Monday, July 26, 2010 at 4:03pm by Anonymous

chemistry
how much heat is required to raise the temperature of one mole of NaCl(s) by 15 degrees celsius at constant pressure
Wednesday, February 23, 2011 at 4:51pm by emoni

PHYSICS
How much heat must be added to 1.0 kg of iron to raise its temperature from 20C to 95C? (ciron = 0.11 cal/gC)
Wednesday, July 3, 2013 at 12:56am by CHELSEA

Chemistry
How would I calculate these? I have the answers because there from a previous test. 1) How much heat is required to raise the temperature of a 5.52-g sample of iron ( specific heat = 0.450 J/g C) from 25.0 degrees C to 79.8 degrees C? 2) You mix 60. mL of 1.00 M silver nitrate...
Sunday, June 30, 2013 at 9:18am by Mary

OCHEM
What would be the effect of decrease the carrier gas flow rate, raise the column temp, have on the retention time? What would be the effect of raise the column temp and decrease the carrier gas flow rate on the ability to resolve two closely spaced peaks? For the first ...
Tuesday, December 22, 2009 at 10:22pm by Sarah

Chemistry
This may not help much but I will try. The reason I say it may not help much is I don't put much stock into "heating curve" as such and the remainder of the question. The bottom line is that whether the heating curve is affected or not, the boiling point of water is higher ...
Thursday, June 10, 2010 at 9:33pm by DrBob222

chemistry
The heat released is the total of the heat required to raise the temperature of the water (1,000 grams) + heat to raise the temperature of the calorimeter. q = [mass H2O x specific heat water x (Tfinal-Tinitial)] + [cal x (Tfinal-Tinitial)]] = 0 Solve for q.
Monday, October 25, 2010 at 5:11pm by DrBob222

chemistry
1. It may not be benzene. 2. It may have a non-volatile solute dissolved in it BUT it would take a BUNCH of mols to raise the boiling oint that much.
Saturday, October 13, 2012 at 9:14am by DrBob222

chemistry
How much energy is required to raise the temperature of 3 kg of lead from 15C to 20C? Use the table below and this equation: Q = mcT.
Tuesday, October 9, 2012 at 11:54am by bebe

Physics
How much heat, expressed in Kwh, is required to raise the temperature of water in a 20,000 gallon pool by 10 degrees C. ?
Friday, April 26, 2013 at 2:45pm by Wolter

Chemistry Help(Calorimetry)
the number of calories needed to raise the temperature of 100 grams of water 10 degrees Celsius is the same as the number of calories needed to raise the temperature of 1,000 grams of water what amount?
Friday, April 9, 2010 at 1:37am by catalina

Chemistry Help(Calorimetry)
the number of calories needed to raise the temperature of 100 grams of water 10 degrees Celsius is the same as the number of calories needed to raise the temperature of 1,000 grams of water what amount?
Friday, April 9, 2010 at 1:37am by catalina

science
How much energy is required to raise the temperature of 22.8 g of copper from 30C to 1250C?
Monday, February 27, 2012 at 7:44pm by science

Jenish
a) Since power = V^2/R , if R were constant the power would decrease by a factor (105/117)^2 = 0.0805. This is a 19.5% reduction in power b) The electric heater wire in a hair dryer does not have a constant resistance with temperature. The resistance will be somewhat lower at ...
Saturday, February 16, 2008 at 2:43am by drwls

Chemistry
I have this problem: How much heat energy is required to raise the temperature of 0.365kg of copper from 23.0 ∘C to 60.0 ∘C? The specific heat of copper is 0.0920 cal/(g⋅∘C). I did the equation using formula Heat= mass x change in temperature x specific...
Wednesday, January 29, 2014 at 1:03pm by mysterychicken

physics
Lake Erie contains roughly 4.00 1011 m3 of water. (a) How much energy is required to raise the temperature of that volume of water from 9.0C to 12.0C? (b) How many years would it take to supply this amount of energy by using the 850-MW exhaust energy of an electric power plant?
Friday, April 6, 2012 at 5:45am by kevin

Chemistry
How much heat is needed to raise the temperature of 155 g of water from 25.5 Celsius to 95.0 Celsius?
Wednesday, March 2, 2011 at 1:07pm by Nicole

chemistry
To raise the temperature of 200.8 g of water from 50.00 C to 60.00 C requires how much heat?
Thursday, February 28, 2013 at 7:15pm by jo

Chemistry
How many calories would be required to raise the temperature of 25.0 g of lead by 55.0 degree Celcius?
Thursday, July 1, 2010 at 2:21am by CMR

Physics
How many joules would be required to raise the temperature of 20g of ice at oC to water at15C?
Wednesday, January 16, 2013 at 12:35am by Benny

lab directions
If the known melting temp is say 450C, raise the temperature of the surrounding water bath to 440, then turn down the heat low, so the temperature slowly rises, at a slow rate, say 2C per minute. If you went fast, you would miss the melting point, as there is only a brief time...
Thursday, September 8, 2011 at 9:16pm by bobpursley

chemistry
You have 53 g of aluminum at25 degrees C. How much heat must be added to raise its temperature to 139 degrees C? Assume the specific heat of aluminum is 903 J/kg degrees C. Answer in units of J
Tuesday, April 24, 2012 at 6:35pm by please help

chemistry
How much heat is required to raise the temperature of 20.0g of H2O from 18.0 Celcius to 28.0 Celcius?
Saturday, April 10, 2010 at 8:33pm by Abbie

Chemistry
How much heat is required to raise the temperature of 53.5g of water from its melting point to its boiling point?
Sunday, November 4, 2012 at 10:27pm by Bird

physics
Lake Erie contains roughly 4.00 multiplied by 1011 m3 of water. (a) How much energy is required to raise the temperature of that volume of water from 11.0C to 13.0C? J (b) How many years would it take to supply this amount of energy by using the 950-MW exhaust energy of an ...
Wednesday, November 17, 2010 at 4:26pm by john

Chemistry
Copper has a specific heat of 0.387 J/gC. How much energy is required to raise the temperature of 140. g of copper from 17.5C to 154.0C?
Monday, March 8, 2010 at 4:27pm by Megan

chem 101
How much heat is required to raise the temperature of exactly one liter of water fro m 60 F to 180 F? answer: 279 kj/mol
Wednesday, April 11, 2012 at 3:41pm by Anonymous

Temperature(Math)
At 5 o'clock in the morning, the temperature at the top of the race course was -13o. By 10:00 A.M., it was +12o. How much had the temperature risen? Answer: 25o The temperature rose from -12o to +23o by noon. How much did the temperature change? Answer: 11o In the afternoon, ...
Thursday, January 26, 2012 at 5:09pm by Andrew

math 156
a worker makes 30000 a year. after 1 year he gets a raise of 5%. the next year he gets a raise of 10%. If he received no raise the first year, what percent increase would give him the same salary as consecutive raises of 5% and 10%? would it be 50%
Thursday, December 3, 2009 at 5:07pm by Rmz

PHYSICS
Lake Erie contains roughly 4.00 1011 m3 of water. (a) How much energy is required to raise the temperature of that volume of water from 9.0C to 11.0C? J (b) How many years would it take to supply this amount of energy by using the 1250-MW exhaust energy of an electric power ...
Monday, November 26, 2012 at 2:02pm by PLEASE HELP(DUE SOON)

physics
How much heat must be absorbed by a 500 g pot of water in order to raise the temperature from 20aC to 30aC?
Tuesday, July 5, 2011 at 11:05pm by Raja

thermal energy
how much heat must be absorbed by a 500 g pot of water to raise the temperature from 20 degree C to 30 degree C?
Monday, December 19, 2011 at 12:11am by faith

Physics
How much heat is necessary to raise the temperature of 3,439 grams of lead, from 20C solid lead to all liquid at 327C?
Monday, November 12, 2012 at 10:07pm by Anonymous

math
If a tank were blocked in (all inlets and outlets are closed) late in the evening with a temperature of 62F a pressure gauge attached to it would read an ambient pressure (14.7 PSIA). The next day, as the sun begins to shine directly on the tank, its inside temperature would ...
Saturday, December 11, 2010 at 8:10pm by Mike

Physics - calorie
The calorie was defined in 1824 and is meant to the the heat required to raise the temperature of pure water by 1°C. The kcal, or Calorie, or kilocalorie is meant to be 1000 calories, or the amount of heat required to raise the temperature of 1 kg of water by 1°C.
Sunday, September 20, 2009 at 4:45pm by MathMate

Physics - calorie
This was my problem: 4.) The specific heat capacity of copper is 0.092 cal/g*oC. Show that the amount of heat needed to raise the temperature of a 10-g piece of copper from 0oC to 100oC is 92 cal. How does this compare with the heat needed to raise the temperature for the same...
Sunday, September 20, 2009 at 4:45pm by Mary

Biology 2
1st, i am not an expert in physics by any means. just a dad. but here is what i found on a google search. 1 calorie is defined as the amount of energy needed to raise the temperature of 1 gram of water by 1C, so... It takes 50 calories to raise your 50 grams by 1C, but you ...
Thursday, October 16, 2008 at 9:15pm by courtney

Chemistry
Is that wavelength of 12 cm? How much heat is needed to raise the temperature of the eye by 3 C? That's q = mass eye x specific heat eye x 3 = about 130 J but you need to do it more accurately. How much energy does each photon have? That's E = hc/wavelength I estimate about 1....
Tuesday, May 7, 2013 at 1:19pm by DrBob222

science
how many grams of water do you have if it takes 3000j to raise the temperature from 21c to 100c
Thursday, December 9, 2010 at 7:16pm by Toni

Chemistry
It took 400 calories of heat to raise 50 mL of water from 20 degrees Celsius to its final temperature. What was that temperature?
Monday, March 14, 2011 at 2:09pm by Shambrey

Chemistry
How much heat (in Joules) is needed to raise the temperature from -79oC to 57oC for 31.5g of water? I remember my teacher using different temperatures for each equation, can someone show me what that is? thanks.
Monday, March 4, 2013 at 6:57pm by Denny

Physics _ Please help
If all the ice melts, 25*Lf = 8.33*10^6 kJ is absorbed in that process. If all of the steam condenses, 4*Lv = 9.04*10^6 kJ is released in that process. There is enough steam to melt all the ice. 0.71*10^6 J are still available from condensation of remaining to raise the ...
Friday, August 12, 2011 at 10:45am by drwls

Chemistry
How much heat, in joules, is necessary to raise the temperature of a 3.5g piece of aluminum from 22 degrees C to 37 degrees C? (J/g*C = 4.18 ; cal/g*c = 1.00)
Saturday, May 22, 2010 at 11:20pm by Kieth

Chemistry
How much heat, in joules, is necessary to raise the temperature of a 3.5g piece of aluminum from 22 degrees C to 37 degrees C? (J/g*C = .90 ; cal/g*C = .21)
Saturday, May 22, 2010 at 11:46pm by Kieth

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