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dcramps
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Homework Statement
If 4.0 g of boiling water at 100.0°C was splashed onto a burn victim’s skin, and if it cooled to 45.0°C on the 37.0°C skin, (a) how much heat is given up by the water? (b) How much tissue mass, originally at 37.0°C, was involved in cooling the water?
Homework Equations
Q=mcΔT
The Attempt at a Solution
For part a)
ΔT = 100.0°C - 45.0° = 55.0°C
c for human tissue is 3.5kJ\kgK
m = 4.0g = 0.004kg
Q=(0.004kg)(3.5kJ\kgK)(55.0°C)
Q=0.77kJ
Is this correct, or am I supposed to convert my temperatures to Kelvin? The 3.5kJ\kg*K throws me off a bit.
For part b)
I used the same equation, but plugged in my answer from part a, and 37°C
0.77kJ=m(3.5kJ\kgK)(37.0°C)
m=0.77kJ/(3.5kJ\kgK)(37.0°C)
m=0.005945946kg
m=5.95g
Have I done everything correctly here? I am reasonably sure that my answer for part a is correct, but part b I am not.