Home Practice Assignment Quizzes Current Time : 04:18:55 PM WWW Time Left : 7 hours 37 minutes 9. A 685 g piece of copper is heated in a furnace to a temperature 7. The copper is then inserted into a 165 g copper 71 am2671 am267 calorimeter containing 290 g of water. The initial temperature of the water and calorimeter is 16 C, and the final temperature after equilibrium is established is 36 C. When the calorimeter and its contents are weighed, 31.0 g of water are found to have evaporated. What was the temperature T?(cw = 4186 J/(kg.C), LF=3.35 x 10* J/kg, Ly=2.26 x 10 1/kg, Ccopper = 387 3/(kg.C) am26 OC am26 10. How much ice (at 0.C) must be added to 1.25 kg of water at 89 .C so as to end up with all liquid at 22 .C? (q = 2000 J/(kg. .C), Cw = 4186 J/(kg. C), Ly=3.35 x 10 J/kg, Lv-2.26 x 10 j/kg) kg 11. A 37.0-kg block of ice at 0C is sliding on a horizontal surface. The initial speed of the ice is 7.70 m/s and the final speed is 3.80 m/s. Assume that the part of the block that melts has a very small mass and that all the heat generated by kinetic friction goes into the block of ice. Determine the mass of ice that melts into water at 0.C. grams 4 A AL MacBook Air