Summ CJuly 12- Sections 3.4-4.2 Problem 3.46- Enhanced - with Feedback Part C Ca

Question

Summ CJuly 12- Sections 3.4-4.2 Problem 3.46- Enhanced - with Feedback Part C Calloulate the heat change in kilocaloriee for melting 170 g of ice at O C Express your answer as a positive value using two significant figures and include the appropriate units Value Units Submit Part Calculate the heat change in kalgjoules for melting 900 kg of ice at 0 C Express your answer as a positive value using three significant figures and include the appropriate units. Value Submit previous partis) Provide Feedback Type here to search

Explanation / Answer

part C)

enthalpy of fusion = 333.6 J/g

mass = 170 g

energy = 333.6 J/g x 170 g

             = 56712 J

            = 56712 J / 4.184 J / cal

= 13554 cal

= 14 kcal

answer : 14 kcal          

part D)

energy = 333.6 J/g x 9 kg

           = 3.00 x 10^3 kJ

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