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11 Nov 2019
specific heat capacity of water-4.184J/g. C specific heat capacity of ice = 2.06 Jg. heat of vaporization of water 2256 J/g heat of fusion of water = 333 J/g 1. Indicate whether each of the following processes is endothermic or exothermic: a) burning fuel oil b) boiling water c) freezing water 2. How much heat is required to melt an ice cube of mass 20.0 g? 3. You have a mug containing 245. mL of coffee at a temperature of 83 °C. You add 26.3 mL of cream from the fridge at a temperature of 4 °C. Assuming the specific heat capacity of coffee and cream to be equal to that of water, what is the temperature of your beverage after thermal equilibrium has been reached? You find the coffee is still too hot, so you drop in a 20.00 g ice cube from the freezer at -8 °C What is the temperature of your coffee after the ice melts and thermal equilibrium has again been achieved? Before you dig out equations and start to plug in numbers, describe what processes are going to occur why energy is transferred, and why the process stops
specific heat capacity of water-4.184J/g. C specific heat capacity of ice = 2.06 Jg. heat of vaporization of water 2256 J/g heat of fusion of water = 333 J/g 1. Indicate whether each of the following processes is endothermic or exothermic: a) burning fuel oil b) boiling water c) freezing water 2. How much heat is required to melt an ice cube of mass 20.0 g? 3. You have a mug containing 245. mL of coffee at a temperature of 83 °C. You add 26.3 mL of cream from the fridge at a temperature of 4 °C. Assuming the specific heat capacity of coffee and cream to be equal to that of water, what is the temperature of your beverage after thermal equilibrium has been reached? You find the coffee is still too hot, so you drop in a 20.00 g ice cube from the freezer at -8 °C What is the temperature of your coffee after the ice melts and thermal equilibrium has again been achieved? Before you dig out equations and start to plug in numbers, describe what processes are going to occur why energy is transferred, and why the process stops
Jean KeelingLv2
22 Jul 2019