| Name__________________________ |
Section____________________________ |
This page is designed to help students practice written problems, and is
meant to be printed out. Hit the print command and show all work in the spaces
provided. Use the 5-step method, and be sure to round you answers correctly and
include units where appropriate.
q = m(DT)Cp
Use the above formula to solve the problems below.
Remember to list the known and unknowns.
| 1. How many calories of heat are
required to raise the temperature of 550 g of water from 12.0 oC to 18.0 oC?
(remember the specific heat of water is 1.00 cal/g x oC)
|
| 2. How much heat is lost when a 640 g piece of copper cools from
375 oC, to 26 oC? (The specific heat of
copper is 0.38452 J/g x oC)
|
| 3. The specific heat of iron is 0.4494 J/g x oC.
How much heat is transferred when a 24.7 kg iron ingot is cooled from 880 oC
to 13 oC?
|
Answers
1) 3300 cal
2) 86 000 J
3) 9 600 000 J |
Please forward all questions, comments and criticisms to Gregory L. Curran.
© Copyright 2004 Fordham Preparatory School, All Rights Reserved.
Last Modified May 22, 2004 |