A 100.0g sample of metal is warmed 20.00 C when 60.0 cal is added. What is the specific heat of this metal?
2007-10-05 02:47:27 · 2 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
Specific heat is about how much energy it takes to warm something up. In particular, it's about how much energy it takes to warm a gram of a substance by a single degree in temperature. So if it takes, for example, 10 calories to increase a gram of something by 1 degree, then the specific heat is 10. (Make sure you understand that, and then you'll be able to easily solve these problems.)
So with your question in particular... It's saying you need 60 calories to raise 100 grams of the stuff 20 degrees.
But you want a single gram, not 100, so that's 1/100th of that, which would only take 1/100th the number of calories. So you need 1/100th of 60 calories, or 0.6 calorie to raise a single gram of the stuff 20 degrees.
But you only want to raise it a single degree, not 20 degrees. So take 1/20th of it. 1/20th of .6 calorie is 0.03 calories.
That's the specific heat: 0.03 calories per gram per degree.
2007-10-05 02:59:48 · answer #1 · answered by jeffcogs 3 · 0⤊ 0⤋
Every metal alloy acts differently. Name the alloy and I can referance it for you.
2007-10-05 04:33:40 · answer #2 · answered by Country Boy 7 · 0⤊ 1⤋
How are you going to pass your exams? Get some one else to do your maths for you?
2007-10-05 11:52:55 · answer #3 · answered by Dreamweaver 4 · 1⤊ 0⤋