1.) A small heater produces 5118BTU of heat. What is the heat output in joules? 1BTU=1.055103J 2.) What is the kinetic energy of 2.00 moles of xenon atoms moving at 465ms1 ? 3.) Problem 6.58 (page 295 of your textbook): "A sample of copper was heated to 120.00C and then thrust into 200.0g of water at 25.00C. The temperature of the mixture became 26.50C. a.) How much heat in joules was absorbed by the water? b.) How many joules did the copper sample lose? c.) What is the heat capacity of the copper sample? d.) What was the mass in grams of the copper sample? " (Cp for water =4.184Jg1C1 and Cp for copper =0.387Jg1