FinalChem

FinalChem - I. Introduction The goal is to find the...

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I. Introduction The goal is to find the chemical identity of Mars ice, or dry ice in this case. In order to find out what might be in the ice, a molecular mass needs to be found to see what molecules are contained in the ice. If the molecular mass is small enough, the combinations of what molecule it can be is reduced. In order to get the molecular mass, a few other calculations are needed that will be discussed in the data analysis section. The materials were: Sample of Dry Ice Distilled Water Tongs Balances 250 mL Erlenmeyer Flask Barometer Rubber Stopper The temperature was recorded in Celsius and converted into Kelvin. Kelvin is the standard temperature for the Ideal Gas Law. The volume of the flask and the tube were measured. The flask was measured by filling it with water and later placing the water in a volumetric measuring glassware. The tube’s volume was found with the geometric volume equation V = (πr 2 )h. The volume was converted into m 3 . The flask was weighed to find a difference in weight once there is pressure in the flask with CO 2 . However, the mass of the flask also includes some mass in the flask, so the mass of air had to be excluded from the calculation. In order to do this, a couple of
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This note was uploaded on 03/06/2009 for the course CHM 117 taught by Professor Williams during the Spring '09 term at ASU.

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FinalChem - I. Introduction The goal is to find the...

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