Floating egg - Admission/Application Essay Example

Answers to Discussion Question 5 of The Floating Egg Experiment How valid is the assumption that aqueous sodium chloride is an adequate replacement for aqueous sodium hydroxide? Explain your reasoning.As long as there is no reaction between the egg and either of the two solutions, it is assumed that the egg will display similar observation in both solutions at the same density.However, as much as both have a sodium atom, there is no other compositional or chemical proof that they have identical properties.

Compare the density you obtained with the densities obtained for different eggs. What, specifically, was the effect of the freshness of the egg?The major observation obtained upon this comparison is that the fresher the egg, the more the salt needed to make it float and conversely, the older the egg, the less the salt needed. A fresher egg requires a higher density solution for it to float, than an older egg.What was the density of the solution in which the egg just floated? Indicate which number is being reported and why.1.07 g/ml.

This has been obtained from the average of the four densities obtained from each of the four measuring devices. This has been made possible by a consideration of the deviation, which has shown no difference from the average value. What were the advantages and disadvantages of each measuring device? Be specific.The advantages of volumetric flask, pipettes and burette are that it’s more accurate, convenient for use while dealing with moderate amounts of liquids and efficient in readings respectively.

The disadvantage of all of them is that some of the substances they measure usually stick on their respective walls, which might give inaccurate results(College of DuPage,1). Compare the mass of the solution contained in the volumetric flask to the mass of the solution delivered by the volumetric flask. Account for differences. Which of the two masses, contained or delivered, should you have used in the determination of the density of the solution? Why?The mass of the solution contained in the volumetric flask is higher than the mass of the solution delivered by the volumetric flask due to the fact that during delivery, some of the liquid sticks to the walls of the flask.

The mass of the solution contained should have been used in density determination because it gives more accurate reading than the delivered one(College of DuPage,1).Work CitedCollege of DuPage.”Floating Egg Experiment” . Available from http://www.cod.edu/dept/chem/POC/Experiments/Floating%20Egg%20Exp/HTMLFiles/FloatingEggExperiment.html