Pala_Thermochemistry_Questions_yS8eayC.docx - sIn-Class...

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sIn-Class Assignment/ExerciseThermochemistryDeclaration:This set of questionshas been adapted for a science-major General Chemistrycourse from Chemistry: Atom First (Openstax) and its supporting information .Time: 60 minutesReport the results with the correct number of significant figures and show your calculations toreceive full credit.Student Name___________________________1.How much heat, in joules and in calories, must be added to a 75.0-g iron block with aspecific heat of 0.449 J/gC to increase its temperature from 25C to its meltingtemperature of 1535C?Solution:2.How much will the temperature of a cup (180 g) of coffee at 95C be reduced when a45-g silver spoon (specific heat 0.24 J/gC) at 25C is placed in the coffee and the twoare allowed to reach the same temperature? Assume that the coffee has the same densityand specific heat as water.Solution:
3.How much heat is produced when 100 mL of 0.250MHCl (density, 1.00 g/mL) and 200mL of 0.150MNaOH (density, 1.00 g/mL) are mixed?o2298HCl(
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