Find the amount of energy per gram in various types of nuts

  • Thread starter RockenNS42
  • Start date
  • #1
52
0

Homework Statement



We lit the nuts on fire and used them to heat up the water which was in an aluminum can. We then recorded the temperate. How would I find the energy?

an example of the results would be
cashew
mass of nut before- 1.53g
temp of water before-23C
mass of nut after - .19g
temp of water after- 58C


Homework Equations


q=mc delta T


The Attempt at a Solution



Im really just not sure how to set up the eqaution. I know I use

mc delta T but Im not sure what to do with the mass
 

Answers and Replies

  • #2
mgb_phys
Science Advisor
Homework Helper
7,774
13
You need to know the mass of water.
The Equation q = mcT is th energy needed to heat a mass of water 'm' through T kelvin

If you want bonus marks you also need the mass of the aluminium can and 'c' for aluminium.
 
  • #3
52
0
As response to the last post, the mass of the wate was 100g and the mass of the can was 79.03
 

Related Threads on Find the amount of energy per gram in various types of nuts

  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
9
Views
2K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
2
Views
2K
Replies
4
Views
6K
Replies
1
Views
681
Replies
3
Views
3K
Top