Question

to freeze the water in this pool? 8. A 10-lane Olympic-sized swimming pool contains 2.5 X 100 kg of water. If the water is at 0°C, how many kilojoules energy must be removed to freeze the water AH fus for H2O = 334 J/g (A) 7.5 X 103 kJ (B) 8.4 X 10% kJ (C) 7.5 X 106 kJ (D) 8.4 X 108 kJ

Answer 1

treat at Waten is at ooe Also water starts to The Ammount of Energy needed to remove;. - in Heus 2.5x10 x 33439 Given, 2.5x106kg = 2.5×10 9 gm Husz 334 Jlg. 2 .cd = 835X10J 835 X 106K7 - 8.35 X1086] ~ 8°4x108 kJ