Friday
December 19, 2014

Search: Calculate the amount of heat required to completely sublime 85.0 of solid dry ice at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 .

Number of results: 50,142

Science
A lead bullet with a mass of 8.50 g traveling at 4.80 x 102 m/s strikes a 2.00 kg block of wood and is embedded in it. Both the bullet and the block are initially at 25.0C. Assume that no heat is lost to the surroundings and that all the kinetic energy of the bullet is ...
December 6, 2011 by Michael

PHYSICS
A copper vat is 10 m long at room temperature (20 degrees C). How much longer it is when it contains boiling water at 1 atm pressure? Air in a balloon does 50 J of work while absorbing 70 J of heat. What is its change in internal energy? A bottle containing 3 kg of water at a ...
February 17, 2011 by Matt

Chemistry
If we heat a 10 g sample of gold and a 10 g sample of iron with 50 kJ of energy each, which will have the greatest change in temperature? gold specific heat= 0.129J/g degC) iron specific heat = (0.452 J/g degC)
September 11, 2014 by Izzy

Science
Consider the following reaction: 2Na + Cl2  2NaCl ΔH = -821.8 kJ (a) Is the reaction exothermic or endothermic? (b) Calculate the amount of heat transferred when 5.6 g of Na reacts at constant pressure. (c) How many grams of NaCl are produced during an enthalpy ...
August 3, 2010 by Joseph

chemistry
21.90 kJ/g x 0.1182 g = ?q = energy obtained by combusting salicylic acid. Then calculate the heat capacity of the calorimeter. That is q from above = C/degree c x 2.84 and solve for C, the heat capacity of the calorimeter. q = heat capacity x delta T q = Cfrom above x 3.50 ...
September 28, 2014 by korko

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

chemistry
The heat of fusion of ice is 6.00 kJ/mol. Find the number of photons of wavelength = 6.42 x 10e-6 m that must be absorbed to melt 2.00 g of ice.
November 13, 2011 by mw

chemistry
I'm not sure how to solve this: If 125 cal of heat is applied to a 60.0-g piece of copper at 20.0∘C , what will the final temperature be? The specific heat of copper is 0.0920 cal/(g⋅∘C). Express the final temperature numerically in degrees Celsius Thanks
January 29, 2014 by mysterychicken

Chemistry
1. The standard heat of formation of glucose and lactic acid are -1274.45 and -694.04 kJ/mole, respectively. The molar heat capacity of the two compounds are 218.86 and 127.6 J/(mol)K a.) What is the total heat of reaction at 25 degree Celsius for the formation of lactic acid ...
November 19, 2006 by Kimmy

chemistry
how do I calculate what temperature is needed to heat 52 grams of ethane to occupy 1200ml?
November 17, 2010 by david

chemistry
calculate the change in temperature if 16.9kJ of heat was removed from 500.0g of water
May 24, 2011 by Anonymous

Chemistry
Is it possible to calculate heat of vaporization if i only have pressure and temperature.
July 20, 2011 by San

Chemistry
When 3g of sodium hydroxide (NaOH) was dissolved in 150g of water a value of 10.5 degrees C was obtained for delta T. Calculate the heat (calories) produced by the solution of 3 g of NaOH Calculate the number of calories that would be produced if one mole of sodium hydroxide ...
November 2, 2006 by Talina

Biology Difference b/w Heat Exhaustion/Heat Stroke
I want to know the causes of heat stroke and heat exhaustion. I cant seem to find separate causes for the two, finding very different answers online :|
February 8, 2013 by Shreya

Earth Science
what is the driving force for the movement of the lithospheric plates? a- heat from the sun b- unequal distribution of heat within Earth c- heat in the atmosphere d- unequal distribution of heat from the oceans My answer is B
August 12, 2014 by Cole

chemistry
NH4NO3(s) + H2O(l) NH4NO3(aq) ΔH = +25.7 kJ What is the final temperature in a squeezed cold pack that contains 40.0 g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18 J/(gC) for the solution, an initial temperature of 25.0C, and no heat transfer ...
July 15, 2012 by lynn

Chemistry
1) A quantity of 85 mL of .900 M HCl is mixed with 85 mL of .900 M KOH in a constant-pressure calorimeter that has a heat capacity of 325 J/C. If the initial temperatures of both solutions are the same at 18.24 degrees C, what is the final temperature of the mixed solution? 2...
November 18, 2014 by Vince

Physicss
a typical woman gives off heat at rate of about 8000 calories per hour. how long would a woman have to stay in a bath of 60L (60,000 g) of 26 C water in order to raise the water temperature to 30 c ? presume that all the heat given off by the woman is transferred to the water...
May 9, 2013 by mary

Chemistry
A calorimeter contains 22.0 mL of water at 14.0 C. When 2.50 g of X (a substance with a molar mass of 66.0 g/mol) is added, it dissolves via the reaction X(s)+H_2O(l)--------> X(aq) and the temperature of the solution increases to 25.5 C. Calculate the enthalpy change, ...
April 2, 2012 by Amanda

Chemistry
An ideal monatomic gas initially at 298 K and 1 atm pressure is expanded from a volume of 1 liter to 2 liters. Consider separately isobaric, isothermal and adiabatic expansions to accomplish this. In each case, calculate the following: a) The final temperature of the gas b) ...
January 30, 2011 by Marcus

chemistry
Please help!!! Desperate for answer!!!? Did the equation do not know the 2nd questions"s answers for the problems a) 2O3(g) = 3 O2(g) + heat (O3 IS UNDERLINED) [6.0x10-1] [0.21] b) 2 CO2 (g) + heat = 2 CO(g) +O2(g) (CO IS UNDERLINED) [0.103] [0.024] [1.18 x10-2] c) NO2(g) + O2...
January 5, 2010 by Shanta

Physics
When 2.1x10^3 J of heat is added to 100.g of a substance, its temperature increases from 15 C to 40 C. What is the specific heat capacity of the substance? Answer is 8.4x10^2 but I need to see the work involved in how to solve the problem
December 8, 2011 by Dorrito

Chemistry
(a) A 102-g sample of water is placed in an insulated container and allowed to come to room temperature at 21C. To heat the water sample to 41C, how much heat must you add to it? kJ (b) Consider the hypothetical reaction, being run in an insulated container that contains 102...
June 7, 2011 by Lance

Chemistry
The specific heat capacity of solid lead is 0.159J/gC, the molar enthalpy of fusion is 5.0kJ/mol, and the melting point of lead is 328C. Calculate the total energy required to change 100g of lead at 25C to molten lead at it's melting point. I will be happy to critique your ...
September 23, 2006 by J.M.

Physics
An ice chest at a beach party contains 12 cans of soda at 3.05 C. Each can of soda has a mass of 0.35 kg and a specific heat capacity of 3800 J/(kg C). Someone adds a 7.15-kg watermelon at 25.0 C to the chest. The specific heat capacity of watermelon is nearly the same as ...
November 17, 2006 by Sara

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...
November 14, 2011 by Amber

combustion
The heat of formation of gaseous octane (C8H18(g)) is -49.79 kcal/mole. (a) Calculate the energy required to form one mole of gaseous octane, (b) Estimate the heat of formation of gaseous octane, and (c) compare your estimation with the actual enthalpy of formation of the ...
October 4, 2012 by pius

Chemistry
Calculate the volume of natural gas (methane) required to bring 3.9 L of water to a boil. Assume the initial temperature of the water is 39 C, and the methane is at 1 bar and 25 C. Assume that methane is an ideal gas, the specific heat capacity of water to be constant and ...
December 2, 2011 by LaurenB

Chemistry
How much heat is required to convert 32.5 grams of ethanol at 28 C to the vapor phase at 78 C? Ethanol (C2H5OH) boils at 75 C. Its density is 0.789 g/mL. The enthalpy of vaporization is 38.56 kJ/mol. The specific heat of liquid ethanol is 2.3 J/g-K.
February 11, 2010 by Anonymous

Chemistry
A cup of teat containing 400g of liquid at 20 degrees celsius was heated. If 58.5 kj of heat was absorbed by the tea, what would the final temperature be? Assume that the specific heat of the tea is the same as that of water (4.18). I am not sure how to start this problem. ...
January 22, 2012 by Hannah

Chemistry
How much energy does it take to convert 750 grams of ice at 0 degrees Celsius to liquid water at 40 degrees Celsius? (Specific Heat of water = 4.18 J/g*C and the heat of fusion = 334 J/g)
May 10, 2012 by Morgan Chemistry

college chem
Write a chemical equation to express the fact that, at 0 C, ice melts by absorbing 334 J of heat per gram of ice.
November 10, 2010 by Brittney

Chemistry
A 1 kg block of ice, at 0.0 celcius is added to a picnic cooler. How much heat will the ice remove as it melts into water at 0.0celcius?
March 22, 2012 by Laurie

chem
If ice were to be placed in a container at a temperature of -2 oC, with a water vapor pressure of 2 torr, you would see a decrease in the volume of solid ice over time.
September 6, 2010 by dan

Physics
Calculate the total heat content of 10 kg of ice at -23C. (Hint: absolute zero is -273C.) Be mindful of significant figure rules for both multiplication and addition.
December 10, 2012 by Kathryn

chemistry
Calculate the total amount (in moles) of Ca and Mg present in a sample of water that required 12.86 ml of 0.0005M EDTA solution to completely complex them.
March 29, 2010 by Ana

Chemistry (please check)
2) Calculate the Molar Enthalpy of Neutralization (ΔHn) in kJ/mol of the reaction between a monoprotic acid and a monoprotic base, given the following information: The temperature change equals 5.06C, 50.0 mL of 1.00 M concentration of Acid 50.0 mL of 1.00 M ...
June 30, 2013 by Mary

physics
We start with 5.00 moles of an ideal monatomic gas with an initial temperature of 123C. The gas expands and, in the process, absorbs an amount of heat equal to 1300J and does an amount of work equal to 2040J. What is the final temperature of the gas? Use R= 8.3145J/(mol*K) for...
October 4, 2009 by Annie

Chemistry
How much heat is required to raise 75 grams of 0 degree Celsius ice to 135 degree Celsius steam?
March 31, 2011 by Lizabeth

Chemistry grade 12
Molar Heat of Fusion of Ice Experiment. Does the Temperature of a component of a system [cup of warm water from experiemtn] depend on the quanity of matter in the sample? two different ways to increase the temperature of a pan of cold water??? Does the temeperature change of a...
January 8, 2009 by Vincent

Chemistry
Calculate the amount of heat transferred when 21.0 of CH3OH(g) is decomposed by this reaction at constant pressure.
March 5, 2012 by Brittany

chem
Calculate the amount of heat transferred when 2.06 g of Mg(s) reacts at constant pressure. 2 Mg(s) + O2(g) 2 MgO(s) H = -1204 kJ
November 1, 2012 by rebekah

chemistry
When 0.320 moles of NH4Cl is dissolved in 1.00 L of water, the temperature drops by 13.7 degrees C. What is the heat of solution of ammonium chloride? The solution has a density of 1.0012 g/mL and a specific heat of 0.9818 cal/g degrees C. How do you find the mass of water to ...
April 7, 2010 by anita

chemistry
In the laboratory a student finds that it takes 20.7 Joules to increase the temperature of 11.0 grams of solid platinum from 20.5 to 35.8 degrees Celsius. What is the specific heat of platinum she has measured.
March 11, 2014 by grace

College Chemistry
Given 400.0 g of hot tea at 80.0C, what mass of ice at 0C must bea added to obtain iced tea at 10.0C? The specific heat of water is 4.18 J/(g*C), The specific heat of water is 4.184 kJ/mol.
December 6, 2010 by Ashley

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

Physics
Please help! Suppose that a 400 gram copper object (specific heat 0.092 cal/g/degrees Celsius) receives 900 cal. of heat. What is the temperature change? Explain your reasoning. Thanks
March 2, 2011 by A

Physic II
A 992.0-g iron meteor impacts the earth at a speed of 1447.0 m/s. If its energy is entirely converted to heat of the meteorite, what will the resultant temperature rise be? (The specific heat for iron is 113 cal/kg.C)
April 7, 2014 by Guliner

Chemistry
Calculate the heat released from 61.5 g of steam at 111 degrees C is converted to water at 39 degrees C. Assume the specific heat of water is 4.184 J/g*C, the specific heat of steam is 1.99 J/g*C and the enthalpy.H.vap= 40.79 KJ/mol of water
January 26, 2012 by Phil

chemist
If 50.0 g of benzene, C6H6, at 25.0 C absorbs 2.71 kJ of energy in the form of heat, what is the final temperature of the benzene? The specific heat capacity of benzene is 1.72 J/g ⋅K.
December 26, 2012 by gsdgsd

physics
A 0.75 kg mass of copper changes temperature from 145.0 C to 46.0 C. How much heat was exchanged in Joules? Did the heat flow into the copper or out of the copper?
January 26, 2012 by mario

science
A 15.0 gram lead ball at 25.0C was heated with 40.5 joules of heat. Given the specific heat of lead is 0.128 J/g∙C, what is the final temperature of the lead?
February 6, 2013 by Suizaranne

Chemistry
How much heat in kJ is required to melt 54 grams of ice at 0 degrees C into water at 0 degrees C if delta Hvap for water = 6.01 kJ/mol?
December 14, 2010 by Hannah

Chemistry
The sugar arabinose, C5H10O5, Molar Mass = 150.15 g/mole, was completely combusted with excess oxygen in a calorimeter. Combustion of a 0.548 g sample of arabinose caused the temperature to increase from 20.00 degrees C to 20.54 degrees C in a calorimeter with a total heat ...
November 2, 2011 by Anonymous

science
as 390 g of hot milk cools in a mug, it transfers 30,000 J of heat to the environment. What is the temperature change of milk? The specific heat of milk is 3.9 J/g degree C.
October 28, 2011 by Justin

Chemistry
A professor orders 250 mL of house coffee at precisely 95C. She then adds enough milk at 10C to drop the temperature of the coffee to exactly 90 C. Calculate the amount of milk (in mL) the professor must add to reach this temperature. Assume that the coffee and milk have ...
September 23, 2014 by Danielle

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
A 45 g block of aluminum initially at 28.0 C absorbs 548 J of heat. What is the final temperature of the aluminum? The specific heat of aluminum is 0.902 J/g C.
April 25, 2013 by University of Louisiana at Lafayette

Pam
A 56.59 g sample of a substance is initially at 20.5 C. After absorbing 1267 J of heat, the temperature of the substance is 116.5 C. What is the specific heat (c) of the substance?
December 5, 2013 by Chemistry

chemistry
In the following experiment, a coffee-cup calorimeter containing 100 mL of H20 is used. The initial temperature of the calorimeter is 23.0 C . If 3.60 g of CaCl2is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of the ...
October 20, 2011 by Colin

Chemistry
I've been trying to figure this problem out all day and I STILL don't know how to solve for the specific heat constant. I blank after I set up the problem. Somebody please help me!!! What is the specific heat constant if 621 g of Metal A raises the temperature of 500.0 g of ...
September 25, 2014 by Lilly

chemistry
is this the right anser? for this problem please let me know thanks calculate the amount of heat in kilojoules released when 50 grams of steam at 125 C are converted to 50 grams of ice at -125 C so 50 grams of H2O Ti= 124 C Tf= -125 C q=? J=? q=m *Cp * At J= 50g * 4.184J/g C...
October 27, 2008 by Joshua

Chemistry
How much energy is required to heat 36.9g of ice at 0 degrees celsius to water at 0 degrees celsius?
March 2, 2013 by Maria

chemistry
Calculate the final temperature of 289 of water initially at 35 upon absorption of 20 of heat.
October 7, 2011 by jasmin

chemistry
a sample of iron (35.0g) absorbs 5.50J. of heat. calculate the increase in temperature that occurs
November 3, 2011 by payton

Chemistry
Calculate the final temperature of 244 of water initially at 35 upon absorption of 20 of heat
February 5, 2013 by KJ

Chemistry
A 35.8f sample of cadminum metal was melted by an electric heater 4.66 J/s of heat. If it took 6.92 min from the time the metal began to melt until it was completely melted, what is the heat of fusion per mole of cadminum?
January 31, 2008 by Lauren

IPC
The specific heat of gold is 0.031 calories/gramC and the specific heat of silver is 0.057 calories/gramC. If equal amounts of each metal are exposed to equal heating, which will heat up faster? The answers are: 1) The silver will heat up almost twice as fast. 2) The gold ...
October 13, 2010 by Katy

Physic
If 0.045 kg of ice at 0 C is added to 0.390 kg of water at 34 C in a 0.150 kg aluminum calorimeter cup, what is the final temperature of the water? If the final equilibrium temperature is 21 C and no heat is lost to the cup itself or the environment, what is the mass of the ...
May 7, 2011 by Anonymous

chemistry
Thermite mixtures are used for certain types of weldings and the thermite reaction is highly exothermic. Given delta H= -852 KJ/mol, 1 mole of granular Fe2O3 and 2 moles of granular aluminum are mixed at room temperature and the reaction is initiated. the liberated heat is ...
July 27, 2013 by sharmaine

chemistry
Thermite mixtures are used for certain types of weldings and the thermite reaction is highly exothermic. Given delta H= -852 KJ/mol, 1 mole of granular Fe2O3 and 2 moles of granular aluminum are mixed at room temperature and the reaction is initiated. the liberated heat is ...
July 27, 2013 by sharmaine

Chemistry
I am thrown off by this question because they dont give a molecule to work with. Also i don't know how i would work the acid... help! A 195 mL solution of a dilute acid is added to 102 mL of a base solution in a coffee-cup calorimeter. The temperature of the solution increases...
March 29, 2014 by Ali

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
Bricks have a thickness of 12 cm, if an external wall of the house measures 10 mx 15m, calculate the rate of heat exchange through this wall if the inside temperature is 200C and the outside temperature is 50C.
April 10, 2013 by Jane

physics
How much paraffin oil would be needed to heat the same volume of water? Heat capacity of water = 4200 j kg-1 K-1 Mass of 1 litre of water = 1kg Heat value of paraffin = 45M J kg-1 Density of paraffin = 800kg m -3 1 cubic centimetre (1cm3 = 10-6 m3) Water ...
December 15, 2010 by Paul

Chemistry
What is the specific heat of a substance if 26.0 kJ are required to raise the temperature of 250. g of the substance from 34.0C to 201.0C?
March 7, 2010 by Tiffany

Chemistry
What is the specific heat of a substance if 35.5 kJ are required to raise the temperature of 345 g of the substance from 69.0C to 150.0C?
March 8, 2010 by Megan

Chemistry
When 10.00g of phosphorus is burned in O2(g) to form P4O10(s), enough heat is generated to raise the temperature of 2990g of water from 18.0 ∘C to 38.0 ∘C. Calculate the heat of formation of P4O10(s) under these conditions. -------------------------------------- ...
February 25, 2014 by John

chemistry/please double check
Hi, I just need to know if I finally got this exercise right. Calculate the amount of heat in kilojoules released when 50 grams of steam at 125 Celsius are converted to 50 grams of ice at -125 Celsius. so, qw= 50*4.184J/g C (125 C-o)= 26.15 x 10^3 qi= 50*2.09*(-125)=-13.065 KJ...
October 28, 2008 by Joshua

Chemistry
20cm3 of 0.500moldm-3 H2SO4 was consumed to neutralize 50cm3 of 0.400moldm-3 NaOH. The temperature of the system is increased by 36 degree C. The heat capacity of the calorie meter was 39 JK-1, and the heat capacityof the solution is 4.2JK-1. Find the enthalpy of ...
February 21, 2013 by Emma

Chemistry
20cm3 of 0.500moldm-3 H2SO4 was consumed to neutralize 50cm3 of 0.400moldm-3 NaOH. The temperature of the system is increased by 36 degree C. The heat capacity of the calorie meter was 39 JK-1, and the heat capacityof the solution is 4.2JK-1. Find the enthalpy of ...
February 21, 2013 by Emma

chemistry
How much heat (in Joules) is gained by the water when a chemical reaction takes place in 100.0 ml aqueous solution, has a temperature increase of 10.20C and a specific heat capacity of 4.180 J/Cg? [Hint: ignore any effects of the calorimeter and solve for qwater]
March 31, 2014 by shelle

Chemistry
A coffee-cup calorimeter initially contains 125 g water at 24.2 degrees celsius. Potassium bromide (10.5 g), also at 24.2 degree celsius, is added to the water, and after the KBr dissolves, the final temperature is 21.1 degrees celsius. Calculate the enthalpy change for ...
February 13, 2012 by Elle

IPC
The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?
October 12, 2010 by Katy

science
The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?
June 5, 2013 by Quan

Chemistry
How many kilograms of water at 15oC can be heated to 95oC by burning 143 grams of methane, CH4, assuming that 100% of the heat is used to heat the water. The heat of combustion of methane is 891 kJ per mole of methane. (The specific heat of water is 4.184 J/goC.) I am not sure...
January 30, 2012 by Hannah

Physics
How much ice at 0 degrees celsius can be melted with 1kg of steam at 100 degrees celsius, assuming no loss of energy to the surroundings? Use specific latent heat values. The specific heat of water is 4200 J kg-1 K-1
June 26, 2013 by Mariya

Physics
A cylindrical copper rod of length 1.20 m and cross-sectional area 5.60 cm^2 is insulated to prevent heat loss through its surface. The ends are maintained at a temperature difference of 100 degrees C by having one end in a water-ice mixture and the other in boiling water and ...
September 23, 2013 by cm

chemistry
Ethyl alcohol (CH3CH2OH) has a heat of fusion of 5.01 kj/mol. How much heat in kj is required to melt 137g of ethyl alcohol.
June 21, 2010 by Kim

Physics
why are you not harmed by the greater-than-1000C sparks from a Fourth of July-type sparkler? The sparks, while hot (high temperature), have little heat in them (low thermal capacity, or specific heat).
March 22, 2007 by Naomi

Physics
The latent heat of vaporizaiton of H2O at body temperature (37.0C) is 2.42 106 J/kg. To cool the body of a 89 kg jogger (average specific heat capacity = 3500 J/(kgC)) by 1.4 C, how many kilograms of water in the form of sweat have to be evaporated?
April 4, 2008 by Pierce

Physics
The latent heat of vaporization of H2O at body temperature (37C) is 2.42 x 106 J/kg. To cool the body of a 77.6-kg jogger [average specific heat capacity = 3500 J/(kg C)] by 2.78 C, how many kilograms of water in the form of sweat have to be evaporated?
December 5, 2012 by StressedStudent

Chemistry
I don't know how to do this question, or even start it. Please Help. 2 kg copper kettle (specific heat capacity 0.385j/gC) has .0500 kg of water at 20C. How much heat is needed to raise the temperature of the kettle and content to 80C?
November 27, 2014 by Sandy

lab+chem.
Hey can u guys help on this lab, I dont get it. I have to figure out the: prediction, Analysis, and evaluation. Problem: what is the molar enthalpy of ice? Evidence: mass of calorimeter: 3.76g mass of calorimeter+ water: 103.26g mass of calorimeter+ water+melted ice: 120.59g ...
August 5, 2006 by David

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

Chemistry
I want to know the enthalpy change for this reaction which occurs in a blast furnace: Fe2O3(s) + 3C(s) --> 2Fe(l) + 3CO(g) You will need the heat of formation for CO, and ironIIIoxide, and the heatofmelting for iron. I suspect you have some temperature in mind also which ...
April 15, 2007 by Alice

chemistry
a chunk of silver has a heat capacity of 42.8J/degrees celcius and a mass of 181g. calculate the specific heat of silver.
November 16, 2009 by joshua

chemistry
Calculate the heat transferred when a 8 g of iron nail is cooled from 50oC to 18oC. The specific heat of iron is 0.45 J/goC.
December 4, 2011 by Dana

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
When 1180 J of heat are added to one mole of an ideal monatomic gas, its temperature increases from 272 to 292 K. Find the work done by the gas during this process. I know the specific heat is Q/delta T, so C = (1180 J)/(20K) = 59. This seems like any easy problem, but now I'm...
June 22, 2007 by tmaria

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