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The first cuvette contains de-ionized water.
R2=0.9783
Absorbance for Penny Solution: 0.120
Grams of Copper in Penny
Beer's Law
A=Elc+b
0.120 = 2.646C+0.02914
C=0.03434 mol/L
Concentration(mol/L) x Volume(L) x Molar mass(g/mol) = Mass (g)
0.03434 mol/L x 0.025 L x 63.55 g/mol = 0.0545 g
Mass Percent of Copper
0...
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Class data was reported for mass percent and percent error of copper composition in the penny. The majority of the mass percent was above the appropriate copper mass percent.
Discussion. Based on the mass percent of copper in the samplings of pennies, the fabricator is not putting exactly 2.5% of copper into the planchets...
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General points of the essay
Copper and Zinc Composition Percentages in Pennies
Percent Mass of Copper in a Penny
Book Review On "Not a penny more not a penny less"
JC Penny
A Bio On PENNY
penny for thoughts
Abolishing The Penny
Penny Marshall
Three Penny Opera
Abolish the Penny
The Case Of Penny Kin
copper
% Copper In An Ore
claim of policy should we abolish the penny
Copper firm
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