+=   ?

Now with cooler weather coming in of course everyone's attention turns to Hot Cocoa?

250 mL at a scalding 94 °C, but what to do ....

I know, drop in an ice cube.  25 grams sitting right at 0 °C.

What is the final temperature? 

First e-mail to Mr. K will net the final temperature worth in points.

Show your calculations of course   : ) yum