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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
12
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
 

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