lab 10 Report.pdf - Soubhadra Sarkar Patrick Garcia Justin Black Emi Diaz Physics 2426 Lab 10 Specific Heats of Metals December 4 2018 Introduction

lab 10 Report.pdf - Soubhadra Sarkar Patrick Garcia Justin...

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Soubhadra Sarkar Patrick Garcia Justin Black Emi Diaz Physics 2426 Lab 10: Specific Heats of Metals December 4, 2018
Introduction: Different substances require different amounts of heat to produce a given temperature change. For example, about three and one-half times as much heat is needed to raise the temperature of 1 kg of iron through a given temperature interval, 6.T, as is needed to raise the temperature of 1 kg of lead by the same amount. The definition, the specific heat of a given material can be determined by adding a known amount of heat to a known mass of material and noting the corresponding temperature change. It is the purpose of this experiment to determine the specific heats of some common metals by calorimetry methods. Safety: This is a kind of lab, which we will be performing for the first time in this class as we will be dealing metals, chemicals, and electricity at the same time, so it is very important that we don’t rush and solve every movement with precision . Materials: Calorimeter Boiler and stand Hot plate or Bunsen burner and striker 2 thermometers (0 °C to 11 0 0C) Two kinds of metal (shot form or slugs with attached strings) Laboratory balance Ice Safety glasses Strainer Procedures: 1. Weigh out 400 g to 500 g (0.4 kg to 0.5 kg) of one kind of dry metal shot. [Do this by first determining the mass of the empty boiler cup (in which the metal shot is heated), and then adding an appropriate amount of metal shot to the cup and reweighing.] Record the mass of the metal, mm, and the room temperature, T,, in the Data Table.