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Wednesday, February 5, 2014

Calorimetry

I.Introduction Calorimetry is a apply to desexualise the gist of catch fire transfer in a chemical reaction. It can measure lead of two things: the amount of heat that is absorbed (in an endothermic process) or the amount that is gained (in an exothermic process). To conclude the calorimetry of a bosom, the equation infra is utilize: Eq. 1q= Cs x g x T Q represents heat. Specific heat (Cs) is multiplied to the mass (g) and temperature trade that occurred in the reaction. ( T). Specific heat is defined as the amount of muscularity required to raise the temperature of 1 g of a nubble by 1 K, under a continual pressure. Considering the accompaniment that substances have differences, the specific heat varies depending on what substance is world heated. Calorimetry is performed with a calorimeter. These can be intricate and pricey devices, besides in this lab, two Styrofoam cups are used. The purpose of this taste is to mastermind the specif ic heat of a foreign coatlic element. To do this, the metal will be heated, and then put into pissing to determine the heat transferred. The heat that is transferred from the metal to the water is mensural employ the equation: Eq. 2 q(water) = -q(metal) The heat of water is verificatory because it was initially nippy, and because the hot metal was being added to it, it gained heat. The heat of the undiscovered metal is negative because of the loss of heat it is experiencing when submerged in cold water. The specific heat constant for water, 4.184 J/g C, is used for this equation. The specific heat can be plant by using The Law of Dulong and Petit: Eq. 3Cs(aluminum) = slope x 1/nuclear weight This equation is used to scram specific heat from the graph that will be displace based on the results of the metal specific heats. II.Materials and Procedure front General chemical science 101/102 Laboratory Manual (pg. 69) for expound list of materials used and pro cedure. The unknown metal used, however, var! ied from gathering to group. The metal used...If you postulate to get a full essay, enjoin it on our website: OrderEssay.net

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