0.700 moles of an unknown solid is placed into water to make 150.0 mL of solution. The solution's temperature decreases by 7.91°C. Calculate ∆H, in kJ/mol, for the dissolution of the unknown solid. (The specific heat of the solution is 4.184 J/g・°C and the density of the solution is 1.02 g/mL).

Chemistry by OpenStax (2015-05-04)
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Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
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Chapter5: Thermochemistry
Section: Chapter Questions
Problem 24E: A 0.500-g sample of KCl is added to 50.0 g of water in a calorimeter (Figure 5.12). If the...
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0.700 moles of an unknown solid is placed into water to make 150.0 mL of solution. The solution's temperature decreases by 7.91°C. Calculate ∆H, in kJ/mol, for the dissolution of the unknown solid. (The specific heat of the solution is 4.184 J/g・°C and the density of the solution is 1.02 g/mL).
 
 
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