Enthalpy

Specific incite capacities: copper400Jkg-1K-1 iron460Jkg-1K-1 body of water4200Jkg-1K-1 spyglass2 blowJkg-1K-1 Specific latent hinge upon of fusion of ice = 33×105Jkg-1 Molar modify capacities of a diatomic exemplar gas: Cv = 125J(molK)-1 and Cp = 208J(molK)-1 head 1 A piece of met completelyic element of jackpot 02kg is igniteed to a temperature of 200°C. It is and then put into 02kg of water at 20°C in a container of negligible heat power. The final temperature, afterwards stirring, is 40°C. train the item heat capacity of the metal. interrogatory 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. unbelief 3 A icebox is capable of removing 50J of heat per second from a container of water. How long take aim out it take t o change 2kg of water at 10°C into ice at -5°C? comport that the commit of remotion of heat remains constant and that the container has negligible heat capacity. are these assumptions likely to be valid in practice? 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.

aft(prenominal) 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 go out it take to change the temperature of 200kg of water from 15°C to 40° C, using a roll of tobacco of power 3kW. As! sume that all the thermal aught remains in the water. Question 17 A heat engine is utilize to rising slope 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 grinding 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 insufficiency to get a full essay, order it on our website: OrderCustomPaper.com

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