Question
The Figure shown below is the heating curve obtained by heating 27.0 g of water from -10.0 to 140.0 degree C. Useful data s also displayed under the heating curve. Use this figure to answer the next 4 questions. What is the value of q in kJ when 27.0 g of ice is heated from -7.75 degree C to liquid water at 0.00 degree C? Please report your answer to the correct number of significant figures. kj Tries 0/2 2. What is q, in kJ, for the process in which 27.0 g of liquid water at 100. degree C is convened into ice at 0.00 degree C? Please report your answer to the correct number of significant figures. kJ Tries 0/2 What s the value of q when 27.0 g of steam is cooled from 137. degree C to 100. degree C? Please report your answer to the correct number of significant figures. kJ Tries 0/2 Which of the following statements are true? Cooling water decreases its kinetic energy. The areas labeled b and d represent an increase in both entropy and potential energy. The molar heat capacity of liquid water is greater than it is for steam. None of these are correct
Explanation / Answer
Number 1:
(27.0g)(2.09 J/g*
