Question

Q4 A ZZ kg block of ice at -15 °C is added to an insulated container partially filled with 12 kg of water at 20 °C.

(Where ZZ = random number as shown in the attachment file. Note that if you do not use the proper numbers, your answer will be considered wrong.) Given: cw = 4186 J/kg.°C; cice = 2220 J/kg.°C, Lf = 3.34×10 5 J/kg

(a) Determine the final state of the mixture.

Explain your answer.

(b) Based on your answer in (a),

calculate either one (1) of the following: - the mass of ice that melts. - the final temperature of the system. (1 mark)

(c) Based on your answer in Q4(b), the system is then heated to 110°C. Assuming all water vaporizes, calculate the total energy of the system. Given: Lv = 2.26×10 6 J/kg, csteam = 2.01×10 3 J/kg.°C

Answer 1