A student prepares a cold pack by dissolving 35.0 g of NaNO3 (MM = 85.0 g/mol) in 95.5 g of water in a calorimeter and the temperature of the solution drops to 10.6 oC. Assume that the specific heat capacity of the solution (mostly water) = 4.18 J/g.°C and that ALL the heat from the dissolution gets transferred to the solution. a) Is this process occurring in an open, closed or isolated system?
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This is because (choose from I - V)
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I. the calorimeter is losing both matter and heat to the outside of the calorimeter.
II. the calorimeter loses heat to the outside air but does not lose any of the NaNO 3 .
III. some of the NaNO 3 is lost outside but the heat transfer occurs inside the calorimter.
IV. transfer of matter and heat occur within the calorimeter and not to the outside.
IV. transfer of matter and heat occur oustide the calorimeter and not on the isnide.