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July 30, 2014

Search: How much heat is required to warm 122 g of water by 23.0 degrees Celcius?

Number of results: 33,237

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

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

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

chem
A mass of 7 kg of water is raised from 8 degrees C to the boiling point 100 degrees C. How much heat is required? The specific heat of water is 1000 cal/kg degrees C. Answer in units of cal I got 644000, is that right?
April 25, 2012 by luke

Urgent-Chemistry Help
I need help with the heat effects and calorimetry worksheet. Please explain how to solve it! Thank you so much! A metal sample weighing 45.2g and at a temperature of 100.0 C was placed in 38.6g of water in a calorimeter at 25.6 C. At equilibrium the temperature of the water ...
December 4, 2006 by Tiffany

chemistry
How much heat, in kilojoules, is evolved when a 3.70 kg sample of molten Cu freezes? The normal boiling point is 1357 K, and heat of fusion is 13.05 KJ/mol. 2.) How much heat must be absorbed at 1357 K to melt a bar of copper (80 * 10 * 12 cm) assume d = 8.93 g/cm^3.
February 15, 2010 by Andrew

chemistry
How much heat, in kilojoules, is evolved when a 3.70 kg sample of molten Cu freezes? The normal boiling point is 1357 K, and heat of fusion is 13.05 KJ/mol. 2.) How much heat must be absorbed at 1357 K to melt a bar of copper (80 * 10 * 12 cm) assume d = 8.93 g/cm^3.
February 15, 2010 by Andrew

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.
September 7, 2010 by summer

physical chemistry
1.) Calculate delta rH for the freezing of water at one bar and -10 degrees C. The heat capacities are H2O(s)=36.9 JK-1mol-1 and H2O(l)=74.5JK-1mol-1. delta H for freezing of water at 0 degree C is -6602Jmol-1 (assume C is independent of temperature). 2.) Assume the hot brick ...
February 21, 2012 by nicole

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...
June 30, 2013 by Mary

physics
A puddle filled with 20. kg of water is completely frozen to -6.0 degrees celcius in the middle of winter. How much heat must be absorbed by the puddle to melt the ice and warm the water up to 20. celcius during the spring thaw?
January 27, 2010 by trav

Science Grade 3
Heat is flowing from the living room to the bedroom. I need to draw a diagram that shows what you know about hte temperature in each room...what should I do? Heat can flow if warm air is interacting with cooler air. (lesser and greater densities) It always seeks equalibrium. ...
May 30, 2007 by Marie

physics
On a cold winter day when the temperature is -20 degrees celsius, what is the amount of heat needed to warm internal body temp(37) the .5 L of air exchanged with each breath? Specific heat of air is 1020 J/(kg K) and that 1.0L air has a mass of 1.3g. Please help!! I dont know ...
November 30, 2009 by Joe

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 ...
May 1, 2010 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 ...
May 1, 2010 by Charles

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 .
September 10, 2011 by Anonymous

CHEM
A 60.0 sample of water is heated to its boiling point. How much heat (in ) is required to vaporize it? (Assume a density of 1.00 .)
September 2, 2010 by Anonymous

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

chemistryB
How much heat is required to decompose 25.5 grams of NaHCO3? 2NaHCO3(s) + 129 kJ 2Na2CO3(s) + H2O(g) + CO2(g)
July 22, 2011 by jane doe

chem
What would happen to the specific heat if some of the warm metal shot were lost during the transfer to the calorimeter? Answer a. It would not affect the calculated value of specific heat b. It would cause the calculated value of specific heat to be artificially high c. It ...
October 24, 2010 by kellie

Chemistry
In one experiment, the mass of water is 92.6 grams, the initial temperature of the water is 67.6oC, the mass of liquid nitrogen added to the water is 61.4 grams, and the final temperature of the water, after the liquid nitrogen has vaporized, is 35.6oC. Specific heat of water...
October 13, 2011 by Carrie

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, ...
March 21, 2013 by Alexandra

chemistry
Calculate the energy in the form of heat, in kJ, required to convert 225 grams of liquid water at 21.0 C to steam at 115 C. Heat of fusion = 0.333 kJ/g; heat of vaporization = 2.26 kJ/g; specific heat capacities: liquid water = 4.18 J/gC., steam = 1.92 J/gC. A. 88.5 kJ B...
October 2, 2011 by Ninaya

chemistry
a 50.0 ml sample of water is heated to its boiling point. how much heat (in KJ) is required to vaporize it? (assume a density of 1.00g/ml).
February 7, 2009 by reese

Chemistry
How much heat is required to vaporize 343g of liquid ethanol at its boiling point? ΔHvap+38.6 Kj\mol
February 22, 2010 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
February 23, 2011 by emoni

chemistry
How much energy is required to vaporize 75.5 mL of ethanol (C2H5OH, d=0.789 g/cm^3) at its boiling point, if its heat of vaporization is 40.5 kJ/mol?
September 30, 2012 by Brunette

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. ?
April 26, 2013 by Wolter

chemistry
Consider the following reaction: 2H2 (g) + O2 (g)  2H2O (l) ΔH = -572 kJ a. How much heat is evolved for the production of 1.00 mol H2O (l)? b. How much heat is evolved when 4.03 g hydrogen is reacted with excess oxygen? c. How much heat is evolved when 186 g ...
November 9, 2012 by Anonymous

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
October 16, 2011 by Meg

physical science
How much heat is required to raise the temperature of a 10.0 kg of aluminum by 80 degrees Celsius? Look up the specific heat of aluminum. The units will be Calories/kg*degC or Joules/kg*degC. Multiply that number by the temperature change (80 C) and the mass (10.0 kg). See ...
June 22, 2007 by jan

Chemistry
Calculate the amount of heat (in calories) required to raise the temperature of 200g of water from 20C to 50C. The specific heat of water is 1.00 cal/g. I have done other spacific heat problems but on this one i don't know how to start...
November 10, 2009 by Christina

physics
(a) How much waste heat is produced by an electrical power station that uses 1.05 multiplied by 1014 J of heat input with an efficiency of 40.0%? (b) What is the ratio of waste heat to work output? (c) How much work is done?
July 24, 2013 by Eric

chemisty
The molar heat capacity of C6H6(ℓ) is 136 J/mol ◦C and of C6H6(g) is 81.6 J/mol ◦C. The molar heat of fusion for benzene is 9.92 kJ/mol and its molar heat of vaporization is 30.8 kJ/mol. The melting point of benzene is 5.5 ◦C, its boiling point is 80...
January 11, 2012 by bob

ela
Check the grammer and spelling Our project will make more heat than other projects because we have tin foil that reflect the heat and the shiny side of the tin foil keeps it warmer. We have a very soft blanket that will keep the water warm because its very soft and warm. This...
January 12, 2010 by anu

Science again...
What other form is released by a radio. A. Heat Energy B. Mechanical Energy C. Ultraviolet Radiation UV? Can you get a tan from your radio? What is that sound...is it mechanical energy? IS the radio warm? Heat energy because c is something to do with the sun b is mechanical ...
April 17, 2007 by Missy

Chemistry
When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 11.0 oz drink from 75 degree Fahrenheit to 37 degree Fahrenheit, if the heat capacity of the drink is 4.18 J/g degree celsius ? (Assume that the heat transfer is 100 % efficient.)
February 5, 2010 by Al

chemistry urgent
calculate the number of joules of heat required to change 85.0 grams of water at 25oC to steam at 10oC (heat of vaporization of water = 2260 j/g and specific heat of water = 4.18 j/g oC)
November 30, 2010 by Lynn

chemistry
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 ...
February 13, 2010 by joseph

chemistry
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 ...
February 13, 2010 by joseph

Science
Is heat transferred from a cool surface to a warm one or is it vice versa? Thanks
May 30, 2009 by Allison

Physics
what would be the final temperature when 80kg of 0 degrees C cold water is mixed with 60kg of 40 degrees C warm water. The sum of the heats gained is zero (one of them loses heat, or negative heat gained). Heatgained80 + heatgained60=0 80*c*(Tf-0) + 60*c*(Tf-40)=0 solve for Tf.
October 27, 2006 by Jennifer

Physics
How much heat is added to a 10.0 g of ice at -20.0 degrees Celsius to convert it to steam at 120.0 degrees Celsius? compute and add the following heats: heat to heat ice from -20C to 0C heat to melt ice at 0C Heat to heat water from 0 to 100C heat to convert water to steam at ...
March 5, 2007 by Marie

Chemistry
Compounds like CCL2F2 are known as chloroflourocarbons, or CFCs. These compounds were once widely used as refrigerants but are now being replaced by compounds that are believed to be less harmful to the environment. The heat of vaporization of CCl2F2 is 289J/g. What mass of ...
December 14, 2006 by Jenn

chemistry
Calculate the amount of heat required to heat a 42kg sample of ethanol from 14.0C to 18.0C
September 4, 2011 by Emily

Physical Science
Suppose you want to heat 40 kg of water by 20 C. How many joules of heat are required?
November 14, 2009 by Roberta

Ashworth
supoose you want to heat 440g of water by 20 C how many joules of heat are required.
March 9, 2010 by Daquindre

physics
What would be the final temp when 100 kg of 0 degrees Celcius cold water is mixed with 60 kg of 35 degrees warm water? Ans is in degrees Celcius. The sum of the heats gained is zero (remember one will lose heat, so have a negative heat gained). Heatgained by cold water + heat ...
March 29, 2007 by Kristina

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
April 11, 2012 by Anonymous

chemistry
how many joules of heat are required to heat a 75 gram silver spoon from 20celcius to 30 celcius
August 14, 2010 by Anonymous

physical science
suppose you want to heat 40g of water by 20c.how many joules of heat are required
October 12, 2012 by Anonymous

Physics
#1.) A wind turbine has a Cp of 0.42 and extracts 50 kW of power when the wind velocity is 25 m/sec. How long are the blades? (ρ = 1.2 kg/m3) #2.) An electric hot water heater is used to heat 30 gallons of water from 20 C to 45 C. a. What heat energy is required to ...
December 5, 2010 by Ricky

college
In warm climates, drinking water is often cooled by evaporating water from the surfaces of clay pots or canvas bags. How many liters of water may be cooled from 37 C to 24 C by the evaporation of 100 g of water? The heat of vaporization of water is 2.4 kJ/g, and the specific...
October 28, 2010 by Abiola Ajibola

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

Chemistry
At 1 atm, how much energy is required to heat 39.0 g of H2O(s) at 22.0 C to H2O(g) at 163.0 C?
March 28, 2012 by Dan

anonymous
At 1 atm, how much energy is required to heat 55.0 g of H2O(s) at 20.0 C to H2O(g) at 163.0 C?
June 21, 2012 by Anonymous

chemistry
At 1 atm, how much energy is required to heat 49.0 g of H2O(s) at 12.0 C to H2O(g) at 169.0 C?
October 20, 2012 by yas

chemistry
At 1 atm, how much energy is required to heat 79.0 g of H2O(s) at 20.0 C to H2O(g) at 121.0 C?
September 13, 2013 by dinah

CHemistry
At 1 atm, how much energy is required to heat 35.0 g of H2O(s) at 12.0 C to H2O(g) at 127.0 C?
February 2, 2014 by Ryan

Chemistry
At 1 atm, how much energy is required to heat 35.0 g of H2O(s) at 12.0 C to H2O(g) at 127.0 C?
February 2, 2014 by Ryan

physical science
suppose you want to heat 40kg of water by 20 degrees celcius. how many joules of heat are required?
October 2, 2008 by Rosemary

Chemistry
How much heat is required to change 10 g of ice at 0o deg C to steam at 100 deg. C?
February 23, 2010 by Mari

Chemistry
How much heat is required to change 2.5kg of ice at 0.0 degrees C to water at 50 degrees C?
October 20, 2010 by Cat

Chemistry
how much heat is required to melt an ice cube that is 4.2 cm x 2.1 cm x 2.9 cm? The density of ice is 0.92 g/cm3
May 2, 2011 by Sam

Chemistry
how much heat is required to melt an ice cube that is 4.2 cm x 2.1 cm x 2.9 cm? The density of ice is 0.92 g/cm3
May 2, 2011 by Sam

Chemistry
How much heat is either ______(absorbed or given off) when 91.45g of HI decomposes to H2 and I2 at 25 degrees C? What goes in the blank and how much heat? Thanks!
April 29, 2012 by Greg

Chemistry
How much heat is required to change 10 grams of ice at 0 deg. C to steam at 100 deg C?
February 23, 2010 by Ally

chemistry
how much energy is required to heat 1.00L of water from 20degrees celcius to 90degress celcius
September 29, 2010 by shawn

Chemistry II
How much energy would be required to heat 60 grams of water from -50 degrees C to 200 degrees C?
March 14, 2011 by Michelle

physics
How much heat is required in order to change 5 g of ice at -15 degree to steam at 150 degree?
February 7, 2012 by joan

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

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 above...
December 8, 2006 by Pat

Chemistry
1. What mass of carbon is required to produce 100kj of heat, when burned in air? Enthalpy change = -392kj. 2. What mass of methanol is required to produce 1000kj of heat, when burned in air?
April 27, 2012 by Josie

Chemistry
How much heat is required to melt 75.5g of ice at -25 degrees Celcius, and convert it to steam at 105 Celcius
July 31, 2010 by Edward

Chemistry
How much heat energy, in kilojoules, is required to convert 63.0g of ice at −18.0 ∘C to water at 25.0 ∘C ?
January 26, 2014 by Rebecca

Chemistry
Lithium metal is a highly reactive metal that oxidizes instantly in water or air. Given the data below, calculate the energy required to heat 10.0 g of Li from 150.0 C to 200.0 C. Molar heat capacity (solid) = 3.58 J/C mol Molar heat capacity (liquid) = 4.379 J/C mol ...
April 25, 2013 by Johnny

Chemistry HEAT OF FUSION
What amount of energy is required to melt a 26.9 g piece of ice at 0oC? The heat of fusion of ice = 333 Jg-1 Heat required to melt the ice = J What amount of energy must be removed from 120 g of water to cool it from 72.1oC to 12.4oC? Specific heat of water = 4.184 JK-1g-1 ...
October 6, 2011 by tanner

physics
What would be the final temperature when 125g of 25 degrees Celcius water is mixed with 85g of 45 Degrees Celcius water? ( hint: Equate the heat gained by the cool water with the heat lost by the warm water.)
May 3, 2013 by Maddie

CHEMISTRY
How much heat is needed to melt 150g of ice? and How much heat is needed to change 150g of ice into steam at 110 degrees? My heat of fusion is 361 and my percent error is 8 if you need that. Answers quickly please :(
March 8, 2011 by TaShe

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?
March 8, 2010 by Megan

chemo
How much heat (in kJ) does it take to melt 28.4 grams of ice at 0 C and raise the temperature of the resulting water to 25 C? Heat of fusion 334 J/g, Specific heat 4.184 J/g C ?
October 29, 2013 by melissa

chem- need major help!
ok i know i posted this before but it got totally confusing and its late and its due tom. When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 14.0 fluid ounce drink from 75F to 35F, if the heat capacity of the drink is 4.18 J/gC? (Assume that ...
September 15, 2010 by Sarah

phys
A 0.600-kg aluminum teakettle contains 4.00 kg of water at 26.0 C. How much heat is required to raise the temperature of the water (and kettle) to 100.0 C?
April 25, 2012 by opp

scuence
if known h2 + br2 produce delta h 2hbr totaled 11.2 -72 then to decipher hbr gas into H2 and br2 as much heat is required?
November 18, 2013 by febhie

Physics
How much heat is required to completely boil away 0.200 kg of water (Hv = 2.26 10^3 kJ/kg)? (Points : 1) 4.52 102 kJ 2.26 103 kJ 4.52 103 kJ 1.13 104 kJ
March 20, 2014 by Me and I

AP chemistry
The specified heat capacity of silver is 0.24 J/C.g. Please help with this Ap chem quastion.? a. Calculate the energy required to raise the temperature of 150.0 g Ag from 273 K to 298. b. Calculate the energy required to raise the temperature of 1.0 mol Ag by 1.0C (called the ...
October 23, 2010 by Nardos

AP chemistry
The specified heat capacity of silver is 0.24 J/C.g. Please help with this Ap chem quastion.? a. Calculate the energy required to raise the temperature of 150.0 g Ag from 273 K to 298. b. Calculate the energy required to raise the temperature of 1.0 mol Ag by 1.0C (called the ...
October 23, 2010 by Nardos

Chemistry
The amount of heat required to raise 200 g of aluminum by 10 degrees celsius if its specific heat is 0.897 J/gC ? I need help. This is all confusing.
May 20, 2014 by Katherina Ramos

Chemistry
Search: How much energy (in Kj) is relased when 25.0g of ethanol vapor at 93, is cooled to -10? Ethanol has a melting point of -114.5, bp of 78.4, specific heat= 2.10J/g, heat of fusion =4.60Kj/mol, specicic heat= 1.9j/g, heat of vaporization = 38.56Kj/mol
September 27, 2011 by Oscar

Chemistry
How much heat is required to raise the temp of 854 g water from 23.5 to 85.0 celcius I got this, is this right X=854(61.5)(4.184)=219747.864
September 6, 2011 by Deanna

chem 101
How much heat is required to raise the temperature of exactly one liter of water fro m 60 F to 180 F? a. 79 kJ b. 120 kJ c. 251 kJ d. 279 kJ correct** e. 502 kJ help with solution?
April 13, 2012 by Anonymous

physics
A class of 11 students taking an exam has a power output per student of 122 W. Assume that the initial temperature of the room is 18.8oC and that its dimensions are 6.40 m by 14.5 m by 3.50 m. What is the temperature of the room at the end of 54.0 min if all the heat remains ...
November 10, 2012 by Chad

Chemistry
Calculate the amount of heat required to heat a 3.3kg gold bar from 30 ∘ C to 63 ∘ Specific heat capacity of gold is 0.128 J/g ∘ C.
October 13, 2013 by Anonymous

Physics
The melting point of a solid is 90.0 degrees C. What is the heat required to change 2.5 of this solid at 40.0 degrees C to a liquid? The specific heat of the solid is 390 J/kg (K) and its heat of fusion is 4000 J/kg. A. 4.9 10^4 J B. 1.0 10^4 J C. 5.9 10^4 J D. 5.0 10^4 J I am...
April 3, 2009 by sophie

Chem
Bromine melts at -7.25 degree C and boils at 58.8 degree C. The enthalpy of fusion of bromine is 10.57 kJ/mol and the enthalpy of vaporization of bromine is 29.96 kJ/mol. The specific heat of liquid bromine is 0.474 J/g∙K. How much heat, in kJ, is required to convert 25....
September 2, 2011 by Maegan

Chemistry
How much energy in kJ is required to raise a 1.75 kg block of gold from 25.0 C to 105.0 C? The specific heat of gold is 0.03083 cal/g C, but I don't know how to compute the answer to the question.
November 16, 2011 by Nathan

Chemistry
How much heat, in Kj, is required to melt 11.0g of ice, at -13.0 degrees C, and vaporize the H20, and rise the temperature of the steam to 114 degrees C. Need help. Anyone, please!
November 19, 2012 by Shelby

physics
The specific heat capacity of steel is 445 Jkg K. How much energy is required to raise the temperature of a 0.410g of kettle which contains 1.2L of water from 20 degrees Celsius to boiling point?
July 23, 2010 by Anonymous

Physics
A cylinder with a movable piston encloses 0.39 mole of ideal gas at 308K . How much heat is required to increase its volume isothermally by a factor of 3? 1100J 1400J 1600J 550J
April 22, 2014 by Lindsay

chemistry
Calculate the amount of heat required to heat a 3.7{\rm kg} gold bar from 30^\circ {\rm C} to 61^\circ {\rm C}. Specific heat capacity of gold is 0.128 \rm J/g ^\circ C
September 19, 2012 by John

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