Specific heat Definition and 481 Threads

Hello, I have a couple problems that I have tried but I'm not sure if I worked them properly. Any advice or help is appreciated. One problem is: An electric immersion heater has a power rating of 1500W. If the heater is placed in a liter of water at 20 degrees C, how many minutes will it...

I am having a lot of trouble with these types of problems.. this one is on a homework assignment and i don't know where to begin. heres the problem : The sepcific heat of lead is 31.0 calories per kilogram per Celsius degree. (a) Find the heat necessary to raise the temperature of 1.30 kg of...

"A piece of aluminum (specific heat 910 J/kg-C) of mass 200g at 80.0 deg Celcius is dropped into a styrofoam cup filled with 100mL of water at 20.0 deg C. What are the final temperatures of the water and the aluminum?" This is what I got: I figured out the amount of heat energy transferred...

Is there any direct relationship between these 2 properties of a matter?

I just read a paper containing this term, "negative specific heat". I have only come across specific heat which is positive not a negative one. How is a negative specific heat be defined or possible?

I am writting an essay for AP biology when I realize I am not entirely sure why water has a high specific heat. I thought for a moment it may be because of its polarity and hydrogen bonds keeping the molecules from moving too much too easily in a sense. I only have one day to do that's . I...

Just trying to locate specific heat constants with constant volume (not pressure), any ideas where to find this?

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...

The specific heat of a 109-g block of material is to be determined. The block is placed in a 34.0-g copper calorimeter that also holds 52.0 g of water. The system is initially at 20.0°C. Then 140 g of water at 83.0°C are added to the calorimeter vessel. When thermal equilibrium is attained, the...

how're all the fine scientists feeling today? well i jst had a question regarding my specific heat & Co. homework. ok here it is: "When a 25g block of metal alloy at 215 degrees celcius (i don't know how to make that round degree symbol on here) is dropped into 85g of water at 22 deg.C...

Specific heat - calorimetry?? Help from brainy chem person :bugeye: How do determine the heat capacity of a calorimeter when, You burn a 100mg of napthalene in it and it's temperature rises by 3.5 degrees C ? the molar mass of napthalene is 128.18g/mol Dont i need the specific...

Hi everyone, Is a calorimetry an experiment or an equation? :bugeye: If its an experiment, what does it determind? If its an equation, what is it? My book doesn't distinguish what it is. What is the equation for determining the specific heat capacity? Is it : CiMiΔT=CfMfΔT If there...

hi guys! need a little help with some questions. we just did an experiment on determining a specific heat of a metal by the method of mixture. if any of you are familiar with this, your help would be very much appreciated. 1. How would the computed specific of the object be affected if...

Hello, I know that the Specific Heat Ratio when referring to the gass(es) comming out the back of a rocket engine is the ratio of the specific heats at a constant pressure/volume and then what I am trying to do is use that to help me solve for what the theoretical force I can expect from the...

Here's the question: I used Q=mc (delta)T. So Q + Q = 0. I put the properties of the coffee in one and the properties of the glass in another. Since I couldn't find a specific heat for coffee I just used that of water (I figure they're pretty similar?)... Anyway, for my final answer u...

In an experiment, .02 kg of substance is heated in a bath of boiling water until its temperature is apporoximately 100*C. The substance is the placed in an insulated container that is holding .10 kg of water at 25*C. The final equilibrium temperature of the mixture is 32*C. The specific heat of...

Please Help! - Specific Heat Problem... I have been stuck for a while, it's online (Webassign), so it told me my answer was wrong. ------- A 6.3x10^2 g sample of water at 90.0°C is mixed with 4.45x10^2 g of water at 22.0°C. Assume no heat loss to the surroundings. What is the final...

problem: a 1350 kg car is moving at 23m/s. the driver brakes to a stop. the brakes cool off to the temperature of the surrounding air, which is nearly constant at 15 celsius, what is the total entropy change? i know that S=integral of dQ/T since T is constant i can take it out of the...

A problem in my book asks me to compute the mass of a gas molecule given its specific heat at constant volume. ("Take c_v = 0.075 cal/g C° for argon and calculate the mass of an argon atom and the molar mass of argon.") Can I get a hint on where to go with this? I don't see any way of...

I have been trying to understand the concept of specific heat ratios. From what I gather, the ratio is defined as the quotient of the Specific heat at constant pressure and the Specific heat ratio at constant volume. Could anybody give me an insight into what leads to gases having different...

I am currently studying thermochemistry and specific heat capacity has been discussed. From observing a list in order of specific heat from highest to lowest and then comparing to a list of densities, it seems to me that the denser a substance is, the lower the specific heat. Is this true and if...

Problem 7. Given; specific heat of water=4186 J/kg* degrees Celcius Brass is an alloy made from copper and zinc. A 0.66 kg brasss sample at 98.6 degrees Celciusus is dropped into 2.33 kg of water at 4.6 degrees Celcius. If the equilibrium temperature is 7.0 degrees Celciusus, what is the...

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.

Hey, can anyone describe to me an experiment to find the specific heat capacity of ice? Keep it simple please :smile: Thanks in advance :wink:

c = 0.182772277 cal/g * C What type of substance is it? it's not glass.

specific heat? Hey guys….I need help with another problem. Q: Below are two sets of data from an experiment to determine the specific heat of a metal sample. For which mass will t the uncertainty n the specific heat be greater? Explain your answer. The uncertainty in all temperature...

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:

Hello. The other day i couldn't sleep, so i started to think. After some long thinking, i reached a concludion (i was half sleep anyway !). I reached the conclusion that the specific heat of any matter is supposed to raise as the temprature of the body raises. So, am i kind of right ? Thank...