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August 2, 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: 33,483

Science
Calculate the amount of heat required to completely sublime 63.0 g of solid dry ice CO2 at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 C.
March 12, 2011 by Katie

Science
Calculate the amount of heat required to completely sublime 63.0 g of solid dry ice CO2 at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 C.
March 12, 2011 by Katie

Physics-
-Steam at 100 C is mixed with 166.4 g of ice at C32.8 C, in a thermally insulated container, to produce water at 44.6 C. Ignore any heat absorption by the container. -Cwater = 4186. J/(kg C) -Cice = 2090. J/(kg C) -Lf,water = 3.33 105 J/kg -Lv,water = 2.26 106...
April 9, 2013 by blur oh no

Chemistry
How much energy as heat is removed from the hand when 5.00 grams of Ga initially at 20 degrees C melts? The value of Heat Fusion is 5.576 kJ-mol and the specific heat of Ga is 0.374 J-g-K. Take the final temp to be 29.76 degrees C.
February 7, 2013 by Student

Chemistry
How much energy as heat is removed from the hand when 5.00 grams of Ga initially at 20 degrees C melts? The value of Heat Fusion is 5.576 kJ-mol and the specific heat of Ga is 0.374 J-g-K. Take the final temp to be 29.76 degrees C.
February 8, 2013 by Student

physics
The melting point of a solid is 90.0 d/C. What is the heat required to change 2.5 kg of this solid at 40.0 d/C to a liquid? The specific heat of the solid is 390 J/kg-K and its heat of fusion is 4000 J/kg. I got 2 different answers 2 different ways: 2.5(50)(4000) which is 5.0 ...
April 3, 2008 by Jon

chem
Mercury(II) Oxide decomposes upon heating, producing elemental mercury. This reaction has an enthalpy value of 90.8 kJ/mol. How much heat is required to produce 2000 lbs of mercury?
February 26, 2014 by johnny

science
The cider is heated from an initial temperature of 4C to a final temperature of 65C. The steam enters the heat exchanger as 50% quality steam and exits as water condensate at 85C. Calculate the mass of steam required to heat 150 kg of cider. (For the cider, assume the Cp=3....
July 16, 2014 by na

Chemistry
At 1 atm, how much energy is required to heat 67.0 g of H2O(s) at 14.0 C to H2O(g) at 115.0 C? Please explain, I'm not very good at Chemistry and this problem is giving me a headache. Thank you!
February 2, 2013 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...
February 5, 2012 by Hannah

chemistry
Calculate the amount of heat required to completely sublime 24.0 g of solid dry ice CO_2 at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol.
September 7, 2008 by Erin

chemistry
Calculate the amount of heat required to completely sublime 76.0g of solid dry ice (CO2) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol.
September 1, 2013 by cj

Chemistry
Help with lab report Need Help finishing my lab report.KNOWN VALUES ARE V OF HCL=50ML,M=2.188.V OF NAOH=55.3ML,M=2.088.INTIAL TEMP FOR HCL=22.5C,NAOH IS 23C.this is for part A: Mass of final NACL solution assuming that the density of a 1 M Nacl solution is 1.04 g/ml? Heat ...
October 26, 2012 by randy

Chemistry Help!
the specific heat capacity of gold is .13 J/gC. Calculate the specific heat capacity of gold in cal/gC. Calculate the specific heat capacity of gold in J/molC. Calculate the amount of energy required in joules to heat 2.5 kg of water from 18.5C to 55.0C I think for these ...
May 31, 2010 by Sheena

Chemistry
the specific heat capacity of gold is .13 J/gC. Calculate the specific heat capacity of gold in cal/gC. Calculate the specific heat capacity of gold in J/molC. Calculate the amount of energy required in joules to heat 2.5 kg of water from 18.5C to 55.0C I think for these ...
May 31, 2010 by Sheena

physics
Explain how heat is transferred between a hot and a cold object by conduction for example, a warm foot on a cold floor
April 19, 2013 by Boobear

science
Explain how heat is transferred between a hot and a cold object by conduction for example, a warm foot on a cold floor.
April 22, 2013 by Boobear

maths-surface area
A cone 7dm high and 6 dm in diameter is placed on the ground. Sand is poured over it until conical heap 21 dm high and 33 dm circumference at the bottom is formed. Find how many m^3 of sand is there?
March 18, 2013 by anoynomous

math
a sand pile in a shape of an upside-down cone has a volume of 350 m2 . The diameter of the base pof the pile is 7m. what is the height of the sand pile?
June 4, 2013 by mickey

math
a sand pile in a shape of an upside-down cone has a volume of 350 m2 . The diameter of the base pof the pile is 7m. what is the height of the sand pile?
June 4, 2013 by mickey

math
a sand pile in a shape of an upside-down cone has a volume of 350 m2 . The diameter of the base pof the pile is 7m. what is the height of the sand pile?
June 4, 2013 by mickey

Science
A 50 gram ice cube is cooled to -10oC in the freezer. How many calories of heat are required to heat it until it becomes liquid water at 20oC? (The specific heat of ice is 0.5 cal/goC.) Answer A) 1250 cal. B) 4000 cal. C) 5000 cal. D) 5250 cal. Can someone please help me solve...
September 26, 2011 by Anonymous

physics
A 50 gram ice cube is cooled to -10oC in the freezer. How many calories of heat are required to heat it until it becomes liquid water at 20oC? (The specific heat of ice is 0.5 cal/goC.) Answer A) 1250 cal. B) 4000 cal. C) 5000 cal. D) 5250 cal. Can someone please help me solve...
September 26, 2011 by Allison

math
A sack of sand measures 21 kilograms and 714 grams,and a sack of yard clippings measures 7 kilograms and 192 grams. How much more does the sack of sand measure than the sack of yard clippings?
November 10, 2011 by Sanaya

chemistry
how much energy in calories, will be required to evaporate 125.0ml of ethanol at its boiling point? Density=0.818g/ml boiling point=78.5C heat of vaporization=210 cal/g
January 27, 2010 by Ashley

chemistry
at the sea side the sun shines equally on the sand and sea. assuming the both absorb the same amount of energy, why is the sand a lot hotter than the sea
September 22, 2011 by sue

Physics
2. Suppose you pour 15 g of hot water (at 55 oC) into a glass that contains 20 g of ice (at - 10 oC). Neglect the heat absorbed in the glass itself. a. How much heat would the water give up to get cooled to the melting point? b. How much heat would it take to get the ice to ...
November 19, 2012 by Jonathan

Physics HELP!
2. Suppose you pour 15 g of hot water (at 55 oC) into a glass that contains 20 g of ice (at - 10 oC). Neglect the heat absorbed in the glass itself. a. How much heat would the water give up to get cooled to the melting point? b. How much heat would it take to get the ice to ...
November 19, 2012 by Jonathan

Chemistry Grade 12
Given the following equation, C3H8 (g) + 5O2 (g) -> 3CO2 (g) + 4H2O (g); H comb = -2219 kJ/mole A) how much heat will be released when 10 g of propane is burned? B) how much heat will be released when 10 g of water (H2O) is formed? Please show all work.
May 8, 2012 by Lassie

Science Please Help
Explain how heat is transferred between a hot and a cold object by conduction for example, a warm foot on a cold floor.
April 10, 2013 by Cassie

Science speed help
Explain how heat is transferred between a hot and a cold object by conduction for example, a warm foot on a cold floor.
April 19, 2013 by Mr.Brain

Science
If your house is heated by a furnace that blows hot air into the rooms, you are depending on the process of ______ to stay warm. Choices are: convection, radiation,conduction, heat
October 2, 2007 by Grant

chem
a considerable amount of heat is required for the decomposition of aluminum oxide. 2Al2O3-> 4Al(s)+ 3O2(g) change in heat= 3352KJ a. what is the heat change for the formation of 1 mol of aluminum oxide from its elements? i got this one. my answer is -1676.0KJ but i didnt ...
January 25, 2012 by Skye

phyical science
A microwave oven has a power requirement of 1235 W. A frozen dinner requires 6.0 min to heat on full power. (a) How much electrical energy (in kWh) is used? 1 kWh (b) If the cost of electricity is 12 cents per kWh, how much does it cost to heat the dinner? 2 what is kwh if ...
September 4, 2010 by ashley

AP chemistry
A typical electric air conditioner rated at 1.00 * 10^4 Btu/h (1 Btu = amount of energy required to raise the temperature of 1 lb of water by 1F). How much water must be evaporated each hour to dissipate as much heat as a typical electric air conditioner?
November 30, 2008 by kuljit

*updated Chem
I am wondering if my work makes sense for the following problem: Warm objects emit electromagnetic radiation in the infra-red region. Heat lamps employ this principle to generate infra-red radiation. Water absorbs infra-red radiation with wavelengths near 2.80um. Suppose this ...
December 6, 2009 by GenChem

Chemistry
How much energy (in kilojoules) is required to convert 280mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 g/mL? Its heat of vaporization is +26.5 kJ/mol at its boiling point.
February 16, 2010 by Julie

Chemistry
How much energy, in calories, will be required to evaporate 125.0 mL of ethanol at its boiling point? Given: Density 0.818 g/mL Boiling Point 78.5 C Heat of Vaporization 210 cal/g Any help is appreciated!
January 19, 2011 by Brooke

Physics (please help!!!!)
A box with a volume V = 0.04 m3 lies at the bottom of a lake whose water has a density of 103 kg/m3. (a) How much force is required to lift the box, if the mass of the box is 1050 kg? (b) How much force is required to lift the box, if the mass of the box is 100 kg? (c) How ...
April 16, 2011 by Anonymous

math
divide eight pounds of sand into twelve equal containers. how much in each container?
February 10, 2012 by chris

Chemistry
How many kilojoules of heat are required to melt a 10.0 g popsicle at 0 degress C? Assume the popsicle has the same molar mass and heat of fusion as water. Could someone tell me what equation to use to solve this or the steps? Thank You.
May 12, 2010 by Anonymous

Physical Science
A truck whose bed is 2.5m long, 1.5m wide, and 1m high is delivering sand to a construction site. How many trips must the truck make to deliver 7? cubic meters of sand? Plese explain your answer.
November 7, 2012 by Ivan

Physical Science
A truck whose bed is 2.5m long, 1.5m wide, and 1m high is delivering sand to a construction site. How many trips must the truck make to deliver 7? cubic meters of sand? Plese explain your answer.
November 7, 2012 by Ivan

chemistry
a reaction witha known q is performed in a bomb calorimeter and is found that 10.0 kj of heat is required to raise the temperature of the calorimeter by 2.15 degrees C. calculate the heat capacity of the calorimeter.
April 27, 2011 by ben

chemistry
a reaction witha known q is performed in a bomb calorimeter and is found that 10.0 kj of heat is required to raise the temperature of the calorimeter by 2.15 degrees C. calculate the heat capacity of the calorimeter.
April 27, 2011 by ben

ap chemistry
Calculate the energy required to heat 827 g of mercury from 37 ◦C to 42 ◦C. The specific heat capacity of Hg() is 0.138 J/g ◦ C. Answer in units of calories
October 22, 2013 by gabriella

Chemisty
LEAD IS A SOFT, DENSE METAL WITH A SPECIFIC HEAT OF 0.028KCAL/KGC, A MELTING POINT OF 328.0C, AND A HEAT FUSION OF5.5KCAL/KG. HOW MUCH HEAT MUST BE PROVIDED TO MELT A 250.0KG SAMPLE OF LEAD WITH A TEMPERATURE OF 20.0C?
October 23, 2008 by Jessica

ap chemistry
Consider the specific heats H2O(s) =2.09 J/g ◦C,H2O () = 4.18 J/g ◦C, and H2O(g) = 2.03 J/g ◦C. The heat of fusion for water is 334 J/g and its heat of vaporization is 2260 J/g. Calculate the amount of heat required to convert 92 g of ice at −13...
October 22, 2013 by gabriella

Meteorology
Posted a couple of days ago on this subject. The wind blows anti-clockwise round a depression (N Hemisphere). In a stereotypical depression isobars form fairly regular circles round the centre of the depression with kinks at the warm and cold fronts with the isobars in the ...
October 10, 2007 by Mike

chem
The specific heat capacity of silver is 0.24 J/Cg. (a) Calculate the energy required to raise the temperature of 140.0 g Ag from 273 K to 295 K. J (b) Calculate the energy required to raise the temperature of 1.0 mol Ag by 1.0C (called the molar heat capacity of silver). J/...
November 26, 2007 by mel

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 the heat ...
April 24, 2013 by Anonymous

Chemistry
Calculate the number of joules required to melt 57.4g of benzene at 5.5 degrees celsius? The heat of fusion for benzene is 9.87 KJ/mol and specific heat for liquid benzene is 1.63 J/g*deg)
February 19, 2010 by Jake

Chemistry
A sample of benzoic acid contaminated with NaCl and sand is to be recrystallized: Benzoid Acid: Solubility in water at 100 degrees Celsius in g/100 mL = 6.8, at 0 degrees Celsius in g/100 mL = 0.2. NaCl: Solubility in water at 100 degrees Celsius in g/100 mL = 39.1, at 0 ...
October 21, 2012 by Trisha

English
1. She likes to jump rope as a warm-up. 2. She likes to skip rope as a warm-up. 3. She likes jump rope as a warm-up. 4. She likes jump roping as a warm-up. 5. She likes skip rope as a warm-up. 6. She likes skip roping as a warm-up. (Which expressions are grammatical?)
November 7, 2013 by rfvv

Biology
This is related to a biology lab I did. What is the purpose of adding sand to hydrogen peroxide (and put at a glowing splint at the mouth of the tube)? The purpose of this lab was to study the action of the enzyme catalase (potato)on hydrogen peroxide and to determine the ...
September 24, 2006 by Annie

Manufacturing Process
THe ability of a sand mold to with stand high temperatures depends on its A. clay content B Sand Content C. Water Content D Wax Content
August 23, 2011 by Casey

Physics - Heat and phase change
8.94 kJ of energy is available to melt 20 g of ice (initially at 0*C) and subsequently to warm the water. What is the water's final temperature in degrees Celsius?
March 19, 2013 by Jos

main ideas study unit
scientist generally agree that earth is getting warmer due to what call the green house effectt. a greenhouse used for plant stay warm because sunlightand heat come through the glass roof are mostly trapped by the grass something like that happen on earth. the atmosphere act ...
January 12, 2011 by nicole

Physics - Specific heat
#1.) If 500 grams of a metal requires 70 calories of energy to raise its temperature by 10 Kelvin, what is its specific heat? #2.) How much heat is gained or lost when 200 grams of ice melts?
October 28, 2010 by Heath

BIOLOGY
which of the following are mature(climax) communities? a tundra b sand dune c temperate rainforest d wetland I'm guessing it's sand dune or wetland
July 7, 2010 by Andrea

Chemistry
a student separated a 1.50 g sample of sand mixed with salt and obtained 0.70 g of salt and 0.65 g of sand. what percent recovery of the initial mixture was obtained?
June 26, 2013 by LicckkyDude

Algebra 1
You are making up your own mix of concrete to patch a set of stairs. In order to have the proper mix, you need to mix 1 part of Portland cement with 2 parts of sand and 3 parts of gravel. A. How many total parts are in one batch of concrete? B. You make a mix with 4 parts of ...
October 5, 2013 by KATIE

Math
If a mixture of 24 lb. of cement, 48 lb. of sand, and 63 lb. of gravel is needed to make 1 cubic foot of concrete, how many pounds of sand are needed to pour a pool deck of 156 cubic feet?
April 30, 2014 by Rhett cowley

Physics
Aluminum is melted during the recycling process. (a) How much heat must be transferred to each kilogram of aluminum to bring it to its melting point, 660 degrees C, from room temperature, 20 degrees C? (b) About how many cups of coffee could you make with this much heat?
February 17, 2011 by Heat transfer

CHEM
Suppose that the microwave radiation has a wavelength of 10.8 cm. How many photons are required to heat 225 mL of coffee from 25.0*C to 62.0*C ? Assume that the coffee has the same density, 0.997 g/mL , and specific heat capacity, 4.184 J/(gK), as water over this temperature ...
March 11, 2010 by baubi

chemistry
Suppose that the microwave radiation has a wavelength of 10.8 cm. How many photons are required to heat 225 mL of coffee from 25.0*C to 62.0*C ? Assume that the coffee has the same density, 0.997 g/mL , and specific heat capacity, 4.184 J/(gK), as water over this temperature ...
October 25, 2010 by randy

Chemistry
Suppose that the microwave radiation has a wavelength of 12.4 cm. How many photons are required to heat 255 mL of coffee from 25.0 C to 62.0 C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 J/(g/ K), as water over this temperature ...
October 27, 2010 by tommy

heat of vaporization
Suppose that 1.00 g of rubbing alcohol (C3H8O) evaporates from a 54.0 g aluminum block. If the aluminum block is initially at 25 C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the ...
January 16, 2010 by Kyle

Marketing
General Mills Warm DelightsTM: Indulgent, Delicious and Gooey! I recommend we all taste test Warm Delights prior to discussing the following questions: In what stage of the product life cycle is cake mix in the U.S.? What is the competitive set of desserts in which Warm ...
April 18, 2012 by Dayi

Chemisrty
Calculate the theoretical amount of CaCl2 that would be required to change the temperature of 50 mL of water from from temperature 20 degrees Celsius to 45 degrees Celsius. Remember that the heat lost during the dissociation is equal to the heat gained by the 50.0 mL of water...
February 23, 2010 by sakura_09

chemistry
Calculate the theoretical amount of CaCl2 that would be required to change the temperature of 50 mL of water from from temperature 20 degrees Celsius to 45 degrees Celsius. Remember that the heat lost during the dissociation is equal to the heat gained by the 50.0 mL of water...
November 6, 2010 by Pat

physics
Brandy is made by distilling ethyl alcohol, which is done by boiling the alcohol until it turns into a gas. How much heat is required to completely distil 0.750 kg of ethyl alcohol?
June 3, 2012 by shan

physics
Brandy is made by distilling ethyl alcohol, which is done by boiling the alcohol until it turns into a gas. How much heat is required to completely distil 0.750 kg of ethyl alcohol?
November 11, 2012 by shan

Math
If a mixture of 24 lb. of cement, 48 lb. of sand, and 63 lb. of gravel is needed to make 1 cubic foot of concrete, how many pounds of sand are needed to pour a pool deck of 156 cubic feet? _______pounds
June 14, 2012 by Leo

physical science
Suppose you are camping in the mountains and you need to melt 1.8 kg of snow at 0.0 degC to 70.0 degC. The specific heat of water is 4186 j/kg*C while the latent heat of fusion for water equals 3.34 x 10^5 J/kg. How much heat will be needed? Express in KJ.
March 18, 2014 by Paul

Physics
A fish at a pressure of 1.1 atm has its swim bladder inflated to an initial volume of 8.16 mL. If the fish starts swimming horizontally, its temperature increases from 20.0 degrees Celsius to 22.0 degress Celcius as a result of exertion. A)Since the fish is still at the same ...
May 4, 2011 by Devon

physics
A 400 g marble block has a specific heat of 860 J/kg C deg. If the block is placed in 700 ml of water, the marble changes it temperature by 17 Celsius degrees. Since the specific heat of water is known to be 4186 J/kg C deg, what is the temperature change of the water. (The ...
February 19, 2014 by Ann

chem
Suppose that the microwave radiation has a wavelength of 10.8cm . How many photons are required to heat 295ml of coffee from 25.0 C to 62.0 C? Assume that the coffee has the same density, 0.997g/ml , and specific heat capacity, 4.184J/(gk) , as water over this temperature range
November 11, 2011 by Anna

science/math
A sand dune can travel up to 30 m per year. How far does the sand dune move per day?
January 25, 2011 by jacob

Science
1. How much heat energy is lost by 3 kg of water when it cools from 80 degrees C to 10 degrees C? 2. A 300 g piece of aluminum is heated from 30 degrees C to 150 degrees C. What amount of heat energy is absorbed? 3. Determine the temperature change in each of the following. (a...
October 23, 2011 by Debra

college chemistry
what is the specific heat of a substance that required 800 joules of heat to raise the temperature of 50 grams of it from 20 degrees Celsius to 30 degrees Celsius?
December 4, 2012 by airy

Chemistry
Calculate the amount of heat in joules required to heat 43 grams of water from 28 degrees celcius to the normal boiling point 100 degrees celcius
October 12, 2012 by Anonymous

Chemistry
Liquid Butane, C4H10, is stored in cylinders to be used as a fuel. Suppose 39.3g of butane gas is removed from a cylinder. How much heat must be provided to vaporize this much gas? The heat of vaporization of butane is 21.3 kJ/mol.
January 31, 2008 by Lauren

Chemistry
Liquid Butane, C4H10, is stored in cylinders to be used as a fuel. Suppose 39.3g of butane gas is removed from a cylinder. How much heat must be provided to vaporize this much gas? The heat of vaporization of butane is 21.3 kJ/mol.
January 31, 2008 by Lauren

physical science
Lead is a soft, dense metal with a specific heat of 0.028 kcal/kgC, a melting point of 328.0C, and a heat of fusion of 5.5 kcal/kg. How much heat must be provided to melt a 202.2 kg sample of lead with a temperature of 20.0C?
October 12, 2010 by Anonymous

Physical Science
lead has specific heat of .028kcal/kgC, melting point of 328 degrees C and a heat fusion of 5.5 kcal/kg. how much heat must be provided to melt a 250kg sample of lead with a temperature of 20 degrees Celsius?
April 8, 2011 by yolanda

Science
Organisms that maintain a constant body temperature rely on the heat produced by cells. Where does this heat come from? A) Special metabolic pathways exist just for the production of heat. B) Mitochondria produce heat in the form of ATP. C) Plants store up heat as they perform...
October 26, 2011 by Jason

Physics
The U.S army's parachuting team, the Golden Knights, are on a routine jumping mission over a deserted beach. On a jump, a 65 kg Knight lands on the beach with a speed of 4.0 m/s, making a .20 m deep indentation in the sand. With what average force did the parachuter hit the sand?
October 24, 2010 by c

chemistry
what quantity of heat is required to vaporize 141 g of benzene at its boiling point 80.1 degrees celcius? heat of vaporization is 30.8 degrees celcius.
January 20, 2011 by Angela

Physics
Why are igloos made of ice, aren't they supposed to keep warm? Igloos are supposed to protect from the outside temperature and wind. I will be happy to critique your thinking. Igloos are made of ice in regions where no other building materials are available. They are much ...
April 22, 2007 by Kranji Secondary School

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...
February 4, 2008 by Lauren

Algebra 2
You are designing a kit for making sand castles. You want one of the molds to be a cone that will hold 48π cubic inches of sand. What should the dimensions of the cone be if you want the height to be 5 inches more than the radius of the base?
December 30, 2011 by Darren

CHEMISTRY
How much heat is lost by 65g of silver when it cools from 325C to -25C? (the specific heat of Ag(s) is 0.24 J/g C)
December 16, 2011 by Cha-Ching

Chemistry
How much heat is required to convert 9 grams of water at 100 degrees C into steam at 100 degrees C. Hvap for water = 40.7 kJ/mol
December 14, 2010 by Hannah

Physical Science
The heat of volcanoes and hot springs comes from trace amounts of radioactive minerals found in the Earth's interior. Why isn't the same rock at the Earth's surface warm?
March 10, 2008 by Rachel

Science
How much heat energy is required to raise the temperature of 5Kilograms of a coal from 20 C to 220 C ? Coal? Doesnt coal decompose before 220C> 1,314,718 j is the correct answer to this question, I just finished a test with that same qustion on it.
July 31, 2005 by Janice

intro to chem
Calculate the amount of heat required to heat a 3.0kg gold bar from 23 degrees Celsius to 60 degrees Celsius
June 21, 2014 by Carol

Chem-E / Chemistry
Calculate the rate of heat required to bring 1.80mol/hr of HBr gas from 37.0 C to 434.0C at atmospheric pressure (Heat capacity of HBr is described by eq.) Cp (kJ/mol * C) = a + bT + cT^2 + dt^3 T is in C and HBr - a = 2.910x10^-2, b= -2.27x10^-7, c= 9.887x10^-9, and d= -4....
August 15, 2012 by Simon

general chem
How much heat is released whena mass of 125 g with a specific heat of 4.11 J/g C increases from 23.2 C to 34.9 C?
March 13, 2011 by Anonymous

Beginner Chemistry!
How much heat is lost by 65g of silver when it cools from 325C to -25C? (the specific heat of Ag(s) is 0.24 J/g C)
December 19, 2011 by Cha-Ching

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