Posted by yash on Friday, August 24, 2012 at 1:29am.
2 liters of water at 80.c is found into a plastic bucket containing 10 liters of water at 20.c what is the final temperature of water ( density of water 1kg/litre) (neglect the heat gained by bucket and specific heat capacity of water = 1cal/gm.c ?

science  bobpursley, Friday, August 24, 2012 at 9:39am
The sum of the heats gained is zero.
2*(cw)(Tf80)+10*cw(Tf20)=0
Now, with the magic of algebra, solve for Tf. Notice that cw, the specific heat of water divides out, and it does not enter the calculation

science  bharati, Thursday, November 21, 2013 at 10:33am
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