Chemistry

posted by .

Can someone please help me with the following?

How do I find the specific heat of a metal when the only information I have is a temperature change ( of -73 degrees C) and a mass (of 22.53 grams)?

And what is the forumla for specific heat?

Thanks in advance!


Hmmm...seems like you would need one more thing...

The equation is:

Q = M c (deltaT)

where Q is the amount of heat put in, M is the mass, and deltaT is the change in temperature. Do they tell you Q??


Does c stand for the specific heat because that is what I am finding? And I don't know the Q, which is the Joules or calories, right? Or is the c the calories?


Yes, the Q is the joules...the amount of heat put in. c is the specific heat.


Okay, well, I have a metal and I'm supposed to identify it by figuring out its specific heat. I did a lab and all it requires of me is to find the mass and temperature change. How do I go about finding the specific heat when I don't know the Joules?


How did you do the experiment? Did you add the hot metal to water, and then record the temperature change of the water?


Yeah. Umm, I found the formula! I have everything for it other than the mass of the water. I know the volume of the water, but not the mass. Is it possible to find the mass of water without its density?


yes, the density of water is a "given." it is 1 gm/ml


Okay, thank you! I think I can figure it out from there. :)


You cant. You must have something else, normally, the heat absorbed.

In High School, you often do this in a water bath (known mass of water, known specific heat, and a measured temperature change). If that is what you did, then the water lost heat (negative heat gain) as the metal absorbed heat.

Heatgainedwater + Heatgainedmetal=0
(one will turn out negative to add to zero)
mw*cw*(Tfinal-tinitialwater) + mm*cm*(Tfinal - Tinitialmetal)=0
you can solve for cm from this.



Thanks, but that's not what we did.


OK, without some measure of the heat absorbed to which increased the temperature of the metal, the specific heat cannot be determined.


It can. I found the formula in my chemistry lab packet and DanH helped me figure out how.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    lead is a soft, dense metal with a specific heat of 0.028 kcal/kg degrees C, a melting point of 328.0 degrees C and a heat of fusion of 5.5 kcal/kg. How much heat must be provided to melt a 250.0 kg sample of lead with a temperature …
  2. 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. …
  3. chem+ help!

    When 80.0 grams of a certain metal at 90.0 °C was mixed with 100.0 grams of water at 30.0 °C, the final equilibrium temperature of the mixture was 36.0 °C. What is the specific heat (J/g°C) of the metal?
  4. Chemistry

    A 63 gram block of an unknown metal at 88 degrees C was dropped into an insulated flask containing approx. 30 g of ice and 30 g of water at 0 degrees C. After the system had reached a steady temp. it was determined that 12.1 g of ice …
  5. ocean county college

    A 150 g sample of metal at 55.0 C raises the temperature of 150 g of water from 23.0 C to 35.0 C. Determine the specific heat of the metal in J/g C. Hint: #1 First find heat absorbed by water using formula q = mass x specific heat …
  6. chemistry

    Data collected from the calorimetry of a metal mass of the metal = 110.62g initial temperature of the water in the cup = 23.0 C initial temperature of the metal in the boiling water = 99.02 C final temperature of the metal AND water …
  7. chem

    Two metals of equal mass, A and B, both at a temperature of 25 degrees celsius, are placed in separate but identical beakers of cold water. Metal A has a larger specific heat than metal B. Metal A is in Beaker 1, and metal B is in …
  8. Chem (Specific Heat)

    I am confused as to how to solve this problem. Can someone please tell me the steps?
  9. chemistry

    A sample of unknown metal has a mass of 36.7 g. This metal was placed in boiling water at 96.0oC until the metal had reached the temperature of the water. The metal was then placed in a foam cup with 50.0 g of water in it at 20.0oC. …
  10. physics

    Specific heat capacity of a certain metal is found by heating the metal and then placing it into water which is in a container made of the same material. The metal has mass of 100g and is heated to 100 degrees celsius. The container …

More Similar Questions