200 g of water at 80 C is mixed with 200 g at 30 C in an insulated pot. Final temperature?
A50 deg C
B55 deg C
C60 deg C
D65 deg C
Answer & Solution
Correct answer: B. 55 deg C
With equal masses the result is the mean, (80 + 30) / 2 = 55 degrees C.
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