Question

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Question 14 2 pts How much heat is required to melt 11.0 g of water at OʻC? The heat of fusion of water is 334 J/g. This question requires supporting work with units and unit cancellations on a separate sheet of paper. turned into your instructor. 540 ) O 2230 11.03 3670) 46.03 Question 16 2 pts How much heat is required to warm 28.6 g of water from 22.0°C to 78.3°C? The specific heat of water is 4.184 J/g. C. This question requires supporting work with units and unit cancellations on a separate sheet of paper. turned into your instructor 2.63 kJ 6.74 kJ 9.37 kJ 2.60) 3.94 * 10ºkJ

Answer 1

#14.

Using equation;

q = m × dH

Where, q= heat required (joules)

m = mass of substance (g)

dH = Heat of fusion (j/g)

Thus heat required for melting 11g water is ;

q = 11g × (334 j/g) = 3674 j which matches closely with 3670 j .

Hence option (d) 3670 joules , is the correct answer.