- #1
pmalayavech
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Homework Statement
Need a second person to help verify if answer is correct.
Copper with a mass of 300 g initially at 200 °C is added to water with an initial temperature of 10 °C and mass of 500 g. What is the final temperature of the system when they are in equilibrium?
ANSWER must be in JOULES
My variables
Cu specific heat: 385.112 J/kg C
Water specificheat: 4186 J
Homework Equations
Mm Cm (Tm - Tf) = Mw Cw (Tf-Tw)
The Attempt at a Solution
Mm Cm (Tm - Tf) = Mw Cw (Tf-Tw)
I convert g to kg for mass
500g to .500kg and 300g to .300kgnow plug equation and work the algebraic equation
(.300) (385.112)(200-tf) = (.500)(4186)(tf-10)
to
(23106.72-115.5336Tf)=(2093Tf-20930)
to
4036.72 = 2208.5336 Tf
to
19.93934799 = Tf
Tf= 19.9 J/kg C
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