What is Heat capacity: Definition and 437 Discussions
Heat capacity or thermal capacity is a physical property of matter, defined as the amount of heat to be supplied to an object to produce a unit change in its temperature. The SI unit of heat capacity is joule per kelvin (J/K).
Heat capacity is an extensive property. The corresponding intensive property is the specific heat capacity, found by dividing the heat capacity of an object by its mass. Dividing the heat capacity by the amount of substance in moles yields its molar heat capacity. The volumetric heat capacity measures the heat capacity per volume. In architecture and civil engineering, the heat capacity of a building is often referred to as its thermal mass .
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.
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...
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...
Chemistry question: Grade 12 stuff (Heat energy)
So we're going to have a lab soon, and its goal is to find the heat energy value (Q). We're going to take a beaker filled with water, record its mass and initial temprature, and then bring a really hot iron washer inside and record its final...
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...
:confused: Hey ya, I need to design 3 different experiments to find the specific heat capacity of a metal block. I have got 2 but am just stuck for a third. The two i have are:
Method of mixtures
Heat up metal block in a water math, transfer to a cold water bath and observe the temperature...
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
: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,
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...
Hi. I've just started a course on statistical physics and the first assignment is this:
A system possesses 3 energy levels, E_1 = \epsilon, E_2 = 2\epsilon and E_3 = 3\epsilon. The degeneracy of the levels are g(E1) = g(E3) = 1, g(E2) = 2. Find the heat capacity of the system.
I've...
I have a room that is V m3. If I heat up the room a certain temp, then let it cool, and I measure the temp drop rate to be i.e. 10K in 2 hours. Then I use the following equation:
\dot Q = C_P \cdot V \cdot \rho \cdot \dot T
This gives me Watt value, but I'm not excactly sure what it...
we need to show that the heat capacity of thermal radiation at constant pressure is infinity. I have an argument, but am not sure if it works. we know that Cp = dQ/dT at constant p, but we also know that p is a function of T only, and therefore that T is a function of P only, therefore if...
I'm just checking that it's okay to use Cv all the time as a heat capacity of an ideal gas, even when the volume's not constant. This is because the average energy per molecule is 3/2*Kb*T from kinetic theory, therefore the average energy per mole is equal to 3RT/2 = CvT etc.
I'm currently...
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 heat capacity of lead is 0.130 J/g C. How many joules of heat are required to raise the temperature of 28.5 grams of lead from 15 to 37?
For this problem the formula that must be used is q = m*C*deltaT, where mass is expressed in g?
q = m*C*deltaT
q = (0.130 J/g*C)*(28.5 g Pb)*(37 -...
Explain how it is possible for a 30,000 kg of snow at 0 deg C to contain more heat energy than 1 mL of liquid water at 100 deg C. (Assume a pressure of one atmosphere.) I am unsure of where to start this? Help Is there a formula?
Hi,
If a heat flux of of 3W/ meter squared covered the 3.6 X 10^14 meters squared ocean surface and contributed only to a change in temp, how many years to raise average temp of ocean 1 degree C?
I calculated the specific heat of seawater which is 4,000 joules. I am stuck!
Explain how it is possible for a 30,000 kg of snow at 0 deg C to contain more heat energy than 1 mL of liquid water at 100 deg C. (Assuming a pressure of one atmosphere.)
Does the specific heat capacity of an object affect the rate of transfer of energy from an object to another?
For instance, alcohol has a lower specific heat capacity than water.
If they are both at 50 degree Celsius and poured into a beaker containing water of 20 degree Celsius respectively...
Hi, could someone help me get started on this problem, I am having a lot of difficulty comprehending these types of problems. THanks for your help guys.
A cup is made of an experimental material that can hold hot liquids without significantly increasing its own temperature. THe .79 kg cup...
I had a lab about tin's heat of fusion. I need to know tin' specific heat near fusion point. Can anybody advice any useful resourse? I have two books, in which are opposite data. I suppose that liquid tin must have higher heat capacity as solid ("liquid" molecules have more "freedom"). Help me...
This is what I've got:
Iron mass: 81.9g
Initial iron temp.: 92'C
Water volume: 100mL
Initial water temp.: 25'C
Final water temp.: 29'C
What the the experimental heat capacity of iron?
Thanks :)
Bjorn
Hello again. My friend is also doing his science fair project and he has trouble thinking of ways that we can apply "relationship of heat capacity and viscosity" to everyday life. His experiment is basically just to examine how much the temperature of fluids with different viscosities are...
A) What temperature will the energy per mole of a solid achieve one third its classical value of 3RT. Express in terms of einstein temperature
Einstein Temperature T_{e} = \frac {h \nu}{k}
where h is Plancks constant
k = boltzmann's constant
Not really sure on how to do this?
Do i...
When using a different calorimeter, and mixing 50 ml of hot water at 65 C with 60 ml of water in the calorimeter at 25 C, the temperture of the calorimeter increased by 5.5 C. Calculate the heat capacity of this calorimeter. Is this a better or worse calorimeter than the one used in the sample...
Find the molar heat capacity of the monoatomic ideal gas in the constant gravitational field. (clue: find the average potential energy as a function of temperature using the barometric formula.)
could someone please help me out?
Hello, Faizan Here
Can anyone show ne how to derive the formula of specific heat capacity pls.? Also i need the derivation of the formula of magnification power of a lens? Thanks in advance to anyone who helps me.
Here's the problem:
To measure the heat capacity of an object, all you usually have to do is put it in thermal contact wit another object whose heat capacity you know. As an example, suppose that a chuck of metais immersed in boiling water (100 degrees), then is quickly transferred into a...
Hello again!
I'm not sure if this is difficult but I believe that everyone have experienced this... I can't explain it... =) Sorry about that.
Anyway, here's my problem...
At noon, when the sand in the beach is already hot, why does the water still feel cold? Early in the night...
Specific Heat Capacity help!
This question is simple but I'm a little confused, it involves beach breezses, temperature, and convection.
Sand on the beach get much hotter than water on sunny day so air above sand heats up and rise due to convection then cold air moves in from over water...
Hello,
150kcal of heat raises the temp of 2.0kg of material by 400 degrees F. Whats the materials specific heat capacity?
I cam up with 1.35 kcal/kg degrees C. is this correct?
Thanks!
Dx :wink: