Questions 1) If one assumes that the specific heat of water doesn't change with temperature, what result would you expect for part C? Calculate your % error based on this value and comment on possible sources of error. [0.5] 9 2) At 100°C, the heat capacity of water is actually 4.2157 J/g °C. Calculate your % error based on this value. [0.5]/n3) Assume that the density of water is 0.998 g/mL. Calculate the amount of water lost to evaporation when you heated the water in part C. [1] 4) Would having some of the water splash out when the metal was dropped into the calorimeter erroneously increase or erroneously decrease the reported specific heat? Explain. [1] 5) There are 4,184 joules in a food Calorie (note the capital "C"). A 70.-gram serving of Kraft® Macaroni and Cheese contains 16 grams of carbohydrate (4.0 Cal/g), 3.0 grams of fat (9.0 Cal/g), and 9.0 grams of protein (4.0 Cal/g). Calculate the temperature increase of 2.0 kg of water if all of the food energy in 150.0 grams of Kraft Macaroni and Cheese goes entirely into heating the water. 10/n6) When 49.834 grams of a metal at 100.0°C is added to 46.497 grams of water at 23.2°C, the temperature of the water increases to 25.6°C. If the metal comes from the list below, what is the identity of the metal? [1] Metal specific heat Be 0.436 cal/g °C brass 0.092 cal/g °C Au 0.030 cal/g °C Ag Mg Fe 0.056 cal/g °C 0.243 cal/g °C 0.108 cal/g °C

Fig: 1

Fig: 2

Fig: 3