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Zach Kmieciak
Prof. Paul
Chem. 112 – Lab Wed 8AM
6 September 2006
Floating Egg
Introduction:
Float an egg using SaCl and H20.
Then measure the mass of 25 mL of
solution using 4 different types of volumetric glassware and determine the density of the
egg using the formula d=m/v.
Procedure:
1) Pour about 1500 mL of water into a beaker.
2) Place egg in the beaker and add enough NaCl to make egg float just
below the surface of the water.
3) Using the volumetric flask to measure out 25 mL of the solution.
4) Weigh the solution in a preweighed beaker.
5) Subtract the weight of the beaker from total weight of beaker and
solution to get the mass of the solution.
6) Find the density of the solution using d=m/v. Record
7) Repeat steps 36 with buret, Mohr pipet, and volumetric pipet.
Result and Calculation:
Flask weighs 75.15 grams.
Volume is 25 mL.
Buret
M1 = 101.21 g
Mohr pipet
M2 = 101.08 g
Volumetric pipet
M3 = 101.56 g
Volumetric flask
M4 = 102.00 g
Subtract mass of flask (75.15 g) from results.
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View Full DocumentM1 = 26.06 g
M2 = 25.93 g
M3 = 26.41 g
M4 = 26.85 g
Use formula d=m/v to find the density of each solution. V = 25 mL
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