Specific heat Definition and 481 Threads

Homework Statement here's a problem I'm having a little bit of trouble with. A)The high temperature limit of the einstein model gives Cv = 3Nk, Find the next order correction in the high temperature limit. B)Show that the first correction to the specific heat in the debeye model in the...

ok so this is my first post and I am not sure if what I am looking for is even possiable or that I am even posting in the right form.. anyways im looking for a way to find the specific heat of a water sample depending on the hardness, i measure hardness with grains per gallon (gpg). and I am...

Homework Statement A mixture of gases containing 10 kg of nitrogen, 10 kg of hydrogen, and 15 kg of helium is contained at a pressure of 6.7 MPa and a temperature of 300 K. If the constituents are taken to be perfect gases and the Gibbs-Dalton law holds, what are the molecular weight and...

Hello, I'm really having trouble figuring out the specific heat capacity of solid NaOH. Any help is apprieciated. Thanks

Homework Statement an aluminum calorimeter with a mass of 100g contains 250g of water. THe calorimeter and water are in thermal equilibrium at 10 degrees celcius. Two metallic blocks are placed into the water. One is copper of 50g at 80celcius. The other is block is 70g and originally at...

Homework Statement I am unable to find the specific heat of certain substances. Examples of such substances are: Sucrose, Citric Acid, and Trinitrotoluene. I need one source for the information in this data, and I am unable to obtain it using a search engine. Is there anyone who actually...

Homework Statement I'm having trouble with the following two problems: 1. A jar of tea is placed in the sunlight until it reaches an equilibrium temperature of 32*C. In an attempt to cool the liquid, which has a mass of .180kg, .112 kg of ice at 0*C is added. At the time at which the...

If the total power per unit area from the Sun incident on a horizontal leaf is 9.00x10^2 W/m2, and we assume that 70.0% of this energy goes into heating the leaf, what would be the rate of temperature rise of the leaf? The specific heat of the leaf is 2.80 kJ/(kg°C), the leaf area is 7.00 x10^−3...

Homework Statement n_1 moles of a monatomic gas and n_2 moles of a diatomic gas are mixed together in a container. Derive an expression for the molar specific heat at constant volume of the mixture. My answer can only use the variables n_1 and n_2, and I'm assuming constants. Homework...

Homework Statement For a gas of molar mass M, Cp/Cv=y. Find specific heat at constant pressure. The Attempt at a Solution C_p=\frac{Pdv}{ndt}+C_v PV=nRT, P=constant \frac{P}{n} \frac{dv}{dt}=R Substituting in the above equation: C_p(\frac{y-1}{y})=R C_p=\frac{Ry}{y-1}...

Hi all, I am currently in the process of writing up my AS coursework investigation of finding the specific heat capacity of Aluminium, and am a bit stuck at explaining some of my results. My results for the SHC of Aluminium are lower than the published values. My value: 700.93 JKgC...

Hi ,please I need something to begin this problem: The specific heat s of a material in [J/(kg deg C] is the amount of energy in joules required to raise the temperature of 1[kg] of material by one degree C. The density ρ of a material in [kg/m3] is the mass in [kg] per cubic meter. If a...

Can someone give me the equation to calculate the change of Cv (specific heat at constant volume with change in temperature. For example the equation to do this with Cp (specific heat at constant pressure) is: Cp = 1.9327e-10*T^4 - 7.9999e-7*T^3 + 1.1407e-3*T^2 - 4.4890e-1*T + 1.0575e+3...

Is my assumption here true? Does having a higher specific heat capacity mean that the object will be a better conductor of heat?

Homework Statement My teacher instructed my class to conduct an experiment to determine the specific heat capacity of Brass, Copper, Aluminium, and Steel. The following setup was used: http://mypage.bluewin.ch/gutter/diagram1.JPG The following method was used: 1.) The electric heater...

Homework Statement The temperature of a brass cylinder of mass 100g was raised to 100 degree celsius and then transferred to a thin aluminium can of negligible heat capacity. The aluminium can contained 150g of paraffin at 11 degree celcius. If the final steady temperature after stirring was...

Explaining your reasoning, show that the ratio of the specifc heat is CP/CV = (DP/DV)s / (DP/DV)t hint :use TDS EQUATIONS I have used tds equation 3 and tds equation 1 and equated them,but i am stuck because i get to an equation like (CP/CV-1)(DT/DV)p = T(DP/DT)v and just do not...

help! need help here because my answers are different from the answer on the book. just wanted to make sure that i am right. these are the problems: 1. How much heat is needed tor aise the temperature by 10 deg celsius of 5 kg og a substance of specific heat capacity 300J/kg deg celsius? what...

Explaining your reasoning, show that the ratio of the specifc heat is CP/CV = (DP/DV)s / (DP/DV)t hint :use TDS EQUATIONS I have used tds equation 3 and tds equation 1 and equated them,but i am stuck because i get to an equation like (CP/CV-1)(DT/DV)p = T(DP/DT)v and just do...

I am designing a cracking furnace to crack Ethylene Dichloride. the furnace is at around 500 C and 2 M Pa. To perform an energy balance I need the specific heat capacity of the EDC at the aforementioned temperature and pressure. I can only find it at standard conditions and can find no way of...

A pond of water at 0°C is covered with a layer of ice 4.50 cm thick. If the air temperature stays constant at -11.0°C, how much time does it take for the thickness of the ice to increase to 9.00 cm? Hint: To solve this problem, use the heat conduction equation, dQ/dt = kA delta T/x and...

I am a beginner in thermodynamics; all I know is how heat is transferred, rotational/translational/vibrational/internal energy, and the law of conservation of energy. I recently learned about specific heat capacity, and I was wondering: why is it that different substances convert varying ratios...

Hey all. I was wondering if anyone knows where I might find the specific heat of brass; I've googled and wikied with no success. Ah, whoa, hang on. It occurs to me that there might not be a standard "brass" alloy... bummer, confirmed by wiki. To rephrase the question then: Does anyone know...

Hi. Was wondering if anyone knew where i could find a list of the metals and their specific heat capacities. All i have found is this one: http://www.engineeringtoolbox.com/specific-heat-metals-d_152.html but i would like one that deals with all the metals Thanks

A metal container, which has a mass of 9.0 kg contains 17.6 kg of water. A 2.0-kg piece of the same metal, initially at a temperature of 200.0°C, is dropped into the water. The container and the water initially have a temperature of 15.1°C and the final temperature of the entire system is...

Two cars collide head on while each is traveling at 80 km/hr. Suppose all their kinetic energy is transformed into the thermal energy of the wrecks. What is the temperature increase of each car? Assume the car's specific heat is that of iron. Any thoughts?

I've been working on a research project and I'm having difficulty with finding heat capacity values/heat capacity ratios. I have been getting 1.33 for the gamma value of steam, and 1.4 for air (at 300K). I was hoping someone could confirm these values. also, I have a question...let's say we...

I'm in a situation where I need to adjust for heat loss, and am at a loss because my "comprehensive" data booklet isn't comprehensive enough. Could anyone please look up the specific molar heat capacity of cyclohexanone for me? Thanks in advance.

Does anyone know how to do this? :rolleyes: I've tried to figure it out but it aint working =/ its for a test i got to turn in now. argh. The specific heat capacity of water is high, 4.184 J/gºC. The presence of impurities in a sample of water lowers its specific heat capacity. What is...

How would I go about determining the specific heat of a metal (like Sodium) that reacts with water?

This questions puzzles me: Which has a larger specific heat capacity (shc) : solid, liquid or gas. We can assume that it is of the same matter. Why? I have checked the numbers. Only water has it on all three states. Liq water has the highest, while that of ice and steam is about the same...

I have to write about the applications/uses of specific heat capacity. I know what SHC is- the amount of heat required to raise the temperature of 1kg of substance by 1°C/ 1K. But I have no idea how that can be applied anywhere or anything.. I've searched the entire internet for the...

Say I have a metal and I heat it up to some temperature T. Then I dunk it in isolated water of temperature t, water which is fairly cool (t << T). Eventually, the metal and the water are at some final temperature Tf. The specific heat of the substance is calculated by: c = (Mass of...

Hey. Here is the question i was given: "When you hold your hand in the air in a hot oven, it takes a while before it starts to burn, but if you touch a cake tin in the oven, it burns almost instantly. Why?" It has to do with the lower specific heat capacity of the tin, which apparently...

Hey. Here is the question i was given: "When you hold your hand in the air in a hot oven, it takes a while before it starts to burn, but if you touch a cake tin in the oven, it burns almost instantly. Why?" It has to do with the lower specific heat capacity of the tin, which apparently...

Sir, Two expressions for relation between specific heats are given and it is asked to say which one is right. They are: 1)Cp – Cv = R 2)Cp – Cv = R/J Which of the 2 is right? Here Cp and Cv are the specific heat of gas at constant pressure and volume respectively. R is...

This is CALORIMETRY PROBLEM. A 0.050kg metal bolt is heated to an unknown initial temperature. It is then dropped into a beaker containing 0.15kg of water with an initial temperature of 21.0 C. The bolt and metal then reach a final temperature of 25.0 C. If the metal has a specific heat...

Here is a homework problem I am working on: 1. Suppose 50 cm^3 of water at 85 degrees C is addedto 100 cm^3 of water at 10 degrees C. What is the equilibrium temperature of the mixture, assuming there is no heat lost to the environment? * = multiplied by T = Temperature of water m = mass...

Hey ya. I need some help with specific heat capacity. :cry: Does anyone know where i can find a table of specific heat capacity values? :redface: Also what are the units of specific heat capacity? do you have to measure the temperature in kelvin or degrees? Plz help, o:) Thanx

I had the following question on a Physics Quiz and I am wondering why the answer is D. When you walk barefoot in a room, the floor feels cooler walking on a tile floor as compared to a wooden floor because A) tile has a smaller specific heat than wood. B) tile has a larger specific...

OK, my teacher set me this question in preparation for my exams, but I was ill when he taught this topic back in November, so I don't really know how to go about answering it. I've tried conducting some research on the web but it hasn't really gotten me any further. Suppose that water at room...

Suppose I have the following materials with specific heat values as given: Material A 5500J/kg.K Material B 3900J/kg.K Material C 9000J/kg.K If I supply the same amount of heat to each which one will have the largest temperature rise? More importantly why?

:confused: Hello I am a high school student and I am doing a Science Fair project on... something... anyways, I really need to know the Specific Heat Capacity of Sodium Acetate please, if anyone knows can you help me, or at least show me some websites, I have searched on Google and in textbooks...

Hi here! (before scriptum. Sorry for my lousy English and LaTex.) I am a bit confused about entropy change statements: In most textbooks is given: \Delta S = n (C_V ln \frac{ \ T_{2}}{T_1} + R ln \frac{ \ V_{2}}{V_1}) where n - moles of gas. And dimension of entropy is [J/K] But now I...

hello First question-Internal energy W(I) of an ideal gas consists only of internal kinetic energy (thermal energy) W(KE). W(I) = W(KE) If at temperature T there are N molecules in an ideal gas,then total W(I) is W(I) = N*3/2*k*T We see from above formula that W(I) of ideal gas...

Hi, I have decided for my advanced level coursework to investigate whether the specific heat capacity of a few metals affects their resistivity in any way. (prob in a circuit) I am at the stage of planning and i have less than a week to complete this stage. I have a few ideas about measuring...

This is practice for a test but I'm confused so I wanted to ask a few questions before taking it.:smile: A total of 74.8 J of heat is required to raise the temperature of 18.69 g of silver from 10.0 to 27.0 oC. What is the specific heat of silver? Show the equation, your substitution...

I'm having a hard time getting my hear around this question. Help would be appreciated as my revision books are not helping. I'm not looking for answers (would be helpful) - just help that will actually be of use to me if I get this question in the real exam. Two physics teachers are getting...

the 1.2okg of a hammer has a speed of 6.5m/s just before it strikes a nail and is brought to rest. Estimate the temperature rise of a 14g iron nail generated by such hammer blows done in quick succession. Aaaume the nail absorbs all the energy.

I have a chem test 2mor and i keep getting stuck on this problem A 150.0g sample of metal at 75.0 degrees C is added to 150.0g of water at 15.0 degrees C. The temperature of water rises to 18.3 degrees C. Calculate the specific heat of the metal, assuming that all the heat lost by the metal...