Enthalpy

Specific incite capacities: copper400Jkg-1K-1 iron460Jkg-1K-1 body of water4200Jkg-1K-1 spyglass2 blowJkg-1K-1 Specific latent depend on of fusion of ice = 33×105Jkg-1 Molar horniness capacities of a diatomic exemplar gas: Cv = 125J(molK)-1 and Cp = 208J(molK)-1 head 1 A piece of met eachic element of multitude 02kg is cacoethesed to a temperature of 200°C. It is then put into 02kg of water at 20°C in a container of negligible warmness power. The final temperature, after(prenominal) stirring, is 40°C. elabo swan the specialized heat capacity of the metal. psyche 2 A piece of ice at -20°C is put into a copper calorimeter of mass 02kg which contains 015kg of water at 20°C. The water is aflame until all the ice has melted. At this time the temperature of the water (and calorimeter) is 15°C. Calculate the mass of the piece of ice. dubiousness 3 A refrigerator is capable of removing 50J of heat per second from a container of water. How long c op out it take to change 2kg of water at 10°C into ice at -5°C? sequester that the rate of remotion of heat remains constant and that the container has negligible heat capacity. are these assumptions likely to be valid in charge? Question 4 A piece of metal of mass 100g, has a temperature of 100°C. It is put into 100g of water at 20°C in a container of negligible heat capacity.

subsequently stirring, the maximum temperature of the change (metal and water) is 275°C. Calculate the specific heat capacity of the metal. Question 5 How long testament it take to change the temperature of 200kg of water from 15°C to 40°C, using a roll of tobacco of ! power 3kW. Assume that all the thermal talent remains in the water. Question 17 A heat engine is utilize to knock off a mass of 200kg. The mass moves 10m vertically upwards. The temperature of the book of facts of the heat engine is 1000K and the heat sink is the atmosphere at 293K. Ignoring attrition in the engine, pulleys etc, calculate the minimum quantity of thermal energy needed to lift the mass. 2. A 2.15-gram cashew junky is burned. The heat...If you loss to get a full essay, order it on our website: OrderCustomPaper.com

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