Nickel in Coffee Cup Calorimeter (Small Error)

  • Thread starter deezer
  • Start date
  • #1
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Homework Statement



nickel weights 28.2g and is heated to 100°C
150g water at 13.5°C
After the nickel is placed in the water, the final temperature of the metal and water is 25°C.
Find the specific heat capacity of nickel

Homework Equations



Q=mcΔT


The Attempt at a Solution



Qwater=mcΔT
=150g x 4.181J/°C x (25°C-13.5°C)
=7212.225J

Qnickel+Qwater=0
Qnickel=-Qwater=-7212.225J
mcΔT=-7212.225J
c=(-7212.225J)/(28.2g)(25°C-100°C)
=3.41 J/g°C

I googled the c value for nickel and it's 0.44 at 25 degrees Celsius. I'm not sure where I went wrong. Thanks in advance for helping
 

Answers and Replies

  • #2
Borek
Mentor
28,628
3,102
nickel weights 28.2g and is heated to 100°C
150g water at 13.5°C
After the nickel is placed in the water, the final temperature of the metal and water is 25°C.
Your result is consistent with these numbers - so it is either error in the book, or the question was asked by someone not knowing the real value, or you made a mistake copying the question.
 
  • #3
epenguin
Homework Helper
Gold Member
3,825
856
Please check but I think that if the initial water temperature were 23.5° instead of the slightly odd-sounding 13.5° it comes out about right.
 

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