Empirical formula #1 lab

Empirical formula #1 lab - VerinaAtalla October5,2009...

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Verina Atalla October 5, 2009 Renu Jain Chemistry 1111 Lab The Law of Definite proportions and Empirical Formula 1) Will your weighings give a mass that it too high or too low if the crucible is still  warm when you way it?  Explain why. Weighing the crucible when it’s warm would give a mass that is too low because  The expanded material, being less dense, rises and when it cools down, the  material sinks.  So when it’s hotter than it should be, it weighs less because its  less dense.    2) Does the experiment successfully explain the law of definite composition? Justify  your answer Well the law of definite proportions states that ‘Compounds are pure substances  that contain two or more elements combined together in a fixed proportions.’  This experiment successfully explains this law because the ratio of copper to 
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Empirical formula #1 lab - VerinaAtalla October5,2009...

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