 # post lab 2.docx - Copper density = 8.96 g/cm3 Zinc density...

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Copper density = 8.96 g/cm3Zinc density = 7.134 g/cm3Penny density = 8.96 g/cm3(.025) + 7.134 g/cm3(.975) = 7.18 g/cm3Average Density in Experiment = 7.2 g/cm3The densities are fairly close, however, the density from the data collected in the experiment is a little bit higher than the one calculated from the percentages. This discrepancy could be due to a number of human errors like reading the measurements incorrectly or not drying off the
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Term
Spring
Professor
PGAmateis
Tags
penny density, Copper density

Unformatted text preview: pennies before putting them into the graduated cylinder, thus adding in more water and skewing the displacement reading. x = − b± √ b 2 − 4 ac 2 a ( 49.0 − 45.0 ) + ( 34.8 − 29.8 ) +( 43.0 − 38.9 ) 3 = 4.4 mL rate = − Δ [ A ] 2 Δt = k [ A ] 2 Aluminum melting point: 660.323˚C Aluminum density: 2.70 g/cm 3 Lead melting point: 327.462˚C Lead density: 11.3 g/cm 3...
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