How many grams of water at 20'C 90°C to 50°C? 4. e Initial te A 159-lb piece of aluminum at 500°F is dropped into 400 lb of water at 60F What is the final temperature? A 42.0-lb piece of steel at 670°F is dropped into 100 lb of water at 75.0°F. What is the final temperature of the mixture? 7. Final te 6. Find the 11. Determ brass ca If 1250 g of copper at 20.0°C is mixed with 500 g of water at 95.0°C, find the final temperature of the mixture. 8 water a of steel at 150°C are added to 900 g of water If 500 g of brass at 200°C and 300 g in an aluminum pan of mass 150 g both at 20.0°C, find the final temperature assuming no loss of heat to the surroundings. The following data were collected in the laboratory to determine the specific eter, and 12. How m iron fro 13. How m 9. heat of an unknown metal: 20.0°C? 14. The spe Mass of copper calorimeter Specific heat of calorimeter Mass of water 153 g 0.092 cal/g °C 275 g Why m are at t

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