Pre Lab #1.docx - Briana Bing Pre-Lab Title “Dimensional...

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Briana Bing September 17, 2018 Pre-Lab Title : “Dimensional Analysis of a 3.0% NaCl Solution” Objective : The objective of the experiment is to use dimensional analysis to determine the mass of salt present in each 1.0mL of a 3.0% NaCl solution, over the course of three trials. After the mass in each trial is determined the outcome will be discussed. Hypothesis : Each 3.0% sample of the NaCl Solution should contain .03g of salt. NaCl should be disbursed evenly throughout because saltwater is a homogeneous mixture. Since H20 evaporates and salt does not, measuring each sample by its evaporation will separate the remaining mass. Variables : The independent variable includes, amount of NaCl in the solution and the size of each sample from the main mixture. The dependent variable includes the mass of NaCl because it is affected by the independent variable. Experimental Outline : -Make the mixture of 25 mL of 3.0% (m/v) NaCl solution. -Measure out the three samples of 1.0 mL solution into three 50 mL flasks.
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  • Fall '12
  • TA
  • Chemistry, Sodium chloride, Erlenmeyer flask, Briana Bing

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