150mL of water at 25oC is mixed 325mL of 80oC water in a sealed vacuum insulated vessel. Determine the final temp of the combined 475mL of water. The density of water is 1g/mL. What's the final temperature??

I got 127.23 degrees celsius. Am I correct?

1 Answer
May 1, 2017


The final mix temp is #64.7^oC#. Note: Generally, for mixing two quantities of water at different temperatures, the final temperature will be between the initial temp and the final temp. Such is a good way to determine if your calculation is in the proper range.


Using Method of Mixtures #=> T_(f"i"nal) = 64.7^oC# see written explanation below.
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