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A calorimeter contains 400 gm of water at temperature of `5^@C`. Then, 200 gm of water at a temperature of `+10^@C` and 400 gm of ice at temp. of `-60^@C` are added. Specific heat of ice `=0.5 ` cal/gm. At equilibrium |
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Answer» Correct Answer - AB `Q_(reqd) =400xx 1/2 xx(0-(-60))` =12000 cal. `Q_(av)=400xx1xx(5-0)+200xx1xx(10-0)` =4000 cal `Q_("by freezing water")=600 xx 80 =48000 cal ` `rArr ` 100 gm water freezes `rArr 500 gm` ice, 500 gm water. |
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