The Reading Of Books Essay

952 words - 4 pages

Investigation of Proper ExperimentalLab Techniques and Recording of UncertaintiesChloe YooOctober 3rd, 2014Mrs. MohurukData ProcessingTable 1: Station 1 - Density of Water Using 50ml Graduated Cylinder

Trial 1

Trial 2

Trial 3

Trial 4

Mass of Beaker (g)

51.000.01

51.310.01

50.920.01

51.390.01

Mass of Beaker
and Solution (g)

60.530.01

60.030.01

60.470.01

60.840.01

Mass of Solution (g)

9.530.02

8.720.02

9.550.02

9.450.02

Volume (mL)

10.00.05

9.900.05

10.000.05

9.900.05

Density (g/mL)

0.950.71%

0.880.74%

0.960.71%

0.950.72%

Uncertainty (%)

0.71

0.74

0.71

0.72

Percent Error (%)

5

12

4

5

Calculation Example (Trial 1):Mass of Solution = (Mass of Beaker and Solution) - (Mass of Beaker)= 60.53g0.01g - 51.00g0.01g = 9.530.0Density of Solution = (Mass of Solution) (Volume of Solution)* Change absolute certainty to relative uncertainty in order to do division.9.53g±0.02g = 9.53±0.21% g10.0mL0.05mL = 10.000.50% mLDensity of Solution = 9.53±0.21%g 10.000.50%mL= (9.5310.00) (0.21%+0.50%) = 1.050.71% g/mLPercent Error = |(Measured Density - Accepted Density) Accepted Density| X 100%*Accepted Density of Water = 1.00g/mLPercent Error = |(0.95 - 1.00) 1.00| X 100% = |-0.05| X 100% = 5%Table 2: Station 1 - Density of Water Using 10ml Graduated Cylinder

Trial 1

Trial 2

Trial 3

Trial 4

Mass of Beaker (g)

50.080.01

51.550.01

50.790.01

50.770.01

Mass of Beaker and
Solution (g)

59.870.01

61.100.01

60.370.01

60.750.01

Mass of Solution (g)

9.790.02

9.550.02

9.580.02

9.980.02

Volume (mL)

10.000.05

9.900.05

9.900.05

10.000.05

Density (g/mL)

0.980.70%

.960.72%

.970.72%

1.000.70

Uncertainty (%)

0.70

0.72

0.72

0.70

Percent Error (%)

2

4

3

0

Calculation Example (Trial 1):Mass of Solution = (Mass of Beaker and Solution) - (Mass of Beaker)= 59.87g0.01g - 50.08g0.01g = 9.790.02Density of Solution = (Mass of Solution) (Volume of Solution)* Change absolute certainty to relative uncertainty in order to do division.9.79g±0.02g = 9.79±0.20% g10.0mL0.05mL = 10.000.50% mLDensity of Solution = 9.79±0.20%g 10.000.50%mL= (9.7910.00) (0.20%+0.50%) = 0.980.70% g/mLPercent Error = |(Measured Density - Accepted Density) Accepted Density| X 100%*Accepted Density of Water = 1.00g/mLPercent Error = |(0.98 - 1.00) 1.00| X 100% = |-0.02| X 100% = 2%Table 3: Station 2 - Density of Water using Volumetric Pipette

Trial 1

Trial 2

Trial 3

Mass of Beaker (g)

50.370.01

51.980.01

50.350.01

Mass of Beaker and
Solution (g)

61.110.01

61.880.01

60.310.01

Mass (g)

10.740.02

9.900.02

9.960.02

Volume (mL)

10.000.05

9.900.05

9.900.05

Density (g/mL)

1.07±0.69%

1.00±0.71%

1.01±0.71%

Uncertainty (%)

0.69

0.71

0.71

Percent Error (%)

7

0

1

Calculation Example (Trial 1):Mass of Solution = (Mass of Beaker and Solution) - (Mass of Beaker)=...

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