A tap supplies water at 10degree Celsius and another tap at 100degree Celsius. How much hot water must be taken so that we get 20kg water at 35degree Celsius? A-7.2kg,b-10kg,c-5.6kg,d-19.9kg
Asked by Priyanka
14th November 2017,
8:10 AM
Answered by Expert
Answer:
If m1 kg of hot water and m2 kg of cold water are mixed to get 20kg water at 35ºC
The amount of heat released by the hot water by cooling =The amount of heat absorbed by the cold water to get heated
m1 x s (100ºC-35ºC) = m2 x s (10ºC-35ºC)
m1 = (m2 x 25) /65
but m1 +m2 = 20
Thus,
m1=5.6kg
Answered by Expert
15th December 2017,
11:58 AM
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