A sample of copper was heated to 120.00 °C and then thrust into 200.0 g of water at 25.00 °C. The temperature of the mixture became 26.50 °C.a. The copper sample lost how many joules?1.26 x 103 J 78.2 J 1.26 J 22.2 J 20.9 Jb. What was the mass in grams of the copper sample?34.7 g 21.7 g 34.3 g 2170 g 27.1 g
A sample of copper was heated to 120.00 °C and then thrust into 200.0 g of water at 25.00 °C. The temperature of the mixture became 26.50 °C. a. The copper sample lost as many joules as the water got: dH water = m C dT dH = 200.0g (4.184J/g-C)(1.50 C rise) dH = 1255.2 joules gained by the water, lost by the copper dH (3sigfigs): 1.26e3 Joules your answer: 1.26 x 103 J
