Density Determinations

Density Determinations - Nhi Vu General Chemistry Agnes...

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Nhi Vu General Chemistry Agnes Rafoulko Density Determinations Introduction : In this experiment, we will obtain the masses and volumes of rock chunks and a NaCl solution. From this, we should be able to determine their densities. Chemical Responsibility : Although sodium chloride contains no major health risks, it is nonetheless imperative that we remember to wear our safety goggles at all times. Also, we must NOT throw the rocks into the sinks or the wastebasket, but instead the beaker provided for collecting the rocks. Report Sheet: Materials : Sodium Chloride Rock Chunks Procedures : 1. Measure volume of the rocks by measuring a set amount of water in a graduated cylinder. Add approximately 20 g of rocks and record the new measurement. The difference in measurements is the rock’s volume. Calculate the density by dividing the mass by the volume. 2. Dissolve 25 g of NaCl to 75 mL of distilled water to obtain a homogeneous mixture. Weigh a dry 25 mL graduated cylinder then add 25 mL of the NaCl
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This lab report was uploaded on 04/07/2008 for the course CHM 214 taught by Professor Davies during the Spring '07 term at Northeastern.

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Density Determinations - Nhi Vu General Chemistry Agnes...

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