What is the final temperature when 20.0 g of water (specific heat capacity 4.184 J•g–1•K–1) at 80.0 ˚C is mixed with 30.0 g of water at 20.0 ˚C in an insulated container?
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Some explanation and solved sample problems here:
http://www.chemteam.info/Thermochem/Mixi…
For your problem, here's the set up:
(20) (80 - x) (4.184) = (30) (x - 20) (4.184)
The 4.181 cancels:
(20) (80 - x) = (30) (x - 20)
From there, do the algebra thing with 'x' being the final temperature.
http://www.chemteam.info/Thermochem/Mixi…
For your problem, here's the set up:
(20) (80 - x) (4.184) = (30) (x - 20) (4.184)
The 4.181 cancels:
(20) (80 - x) = (30) (x - 20)
From there, do the algebra thing with 'x' being the final temperature.