Question

part a and b

How much heat energy, in kilojoules, is required to convert 42.0 g of ice at 18.0 C to water at 25.0 C? Express your answer to three significant figures and include the appropriate units View Available Hint(s) 22.5 kJ Submit Previous Answers X Incorrect, Try Again, 2 attempts remaining Part B How long would it take for 1.50 mol of water at 100.0 C to be converted completely into steam if heat were added at a constant rate of 25.0 J/s? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) IA

Answer 1

Data used =

Specific heat of ice = 2.09 J/g°C

Specific heat of water = 4.18 J/g°C

Enthalpy of fusion = 334 J/g

Enthalpy of vaporisation = 2250 J/g

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