7. 10 kg of water at 90°C is cooled by mixing 20 kg of water at 20°C. What is the final temperature of the mixture?
Added by Angela P.
Step 1
We can use the formula: Q = mcΔT where Q is the heat gained or lost, m is the mass of the water, c is the specific heat capacity of water (which is 4.18 J/g°C), and ΔT is the change in temperature. For the colder water (20 kg at 20°C), let's call the final Show more…
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