Analytical TechniquesEssay Preview: Analytical TechniquesReport this essayExperiment 1I. Purpose: In this experiment, data analysis is used and typical lab measures are determined. Samples of various weights are measured and analyzed to determine the accuracy of laboratory tools such as micropipets, pipets, and an analytical balance.II. Theory: An analytical balance is used throughout this experiment to measure dry beakers and then beakers filled with various amounts of room temperature deionized water. Pipets and micropipettes are used to measure the amount of water. Statistical analysis is then used to determine the accuracy of these tools. III. Sample Calculations:Average/Mean: x̄g=30.6860g [pic 1]Range: Difference of highest and lowest value= 30.6864g-30.6856g=0.0008gStandard deviation: =0.000356g[pic 2][pic 3]Relative standard deviation: RSD=== 1.16e-5[pic 4][pic 5]Temperature adjustment for water: at 23° water is [pic 6]) = 10.0719mL [pic 7]Accuracy percentage= [pic 8]IV. Data and Results:Mean Mass of Beaker Analysis Volume of 10mL Pipet Analysis30.6863g30.6864g30.6859g30.6856g30.6857gBeakerDry weight of beakerPipet 10 mL into glassMass differenceTemperature Adjustment[pic 9]128.9460g38.9828g10.0368g10.0719mL230.6843g40.6920g10.0077g10.0427mL328.6868g38.4070g9.7202g9.7542mL428.8230g38.8060g9.9830g10.0179mLVolume of 5mL Pipet Analysis[pic 10]
BeakerDry weight of beakerPipet 5 mL into glassMass differenceTemperature Adjustment[pic 11]128.9273g33.9278g5.0005g5.018002mL230.6839g35.6655g4.9816g4.999036mL328.6580g33.6918g5.0338g5.051418mL428.8124g33.8007g4.9883g5.005759mLMeasurements and conversions of 500μL, 1mL (1000μL), 50μL, and 100μL using micropipettesNote: For the 500μL and 1mL measurements, a 100-1000μL micropipette is used. For the 50μL and 100μL measurements, a 10-100μL micropipette is used.500μLTemperature adjustment1mL (1000 μL)Temperature adjustment50μLTemperature adjustment100μlTemperature adjustment0.5048g0.5067mL0.9916g0.9951mL0.0497g0.049874mL0.1003g0.1005mL0.4987g0.5004mL0.9951g0.9986mL0.0504g0.05058mL0.1003g0.1005mL0.4978g0.4995mL0.9928g0.9963mL0.0496g0.04977mL0.1004g0.1006mL0.4975g0.4992mL0.9945g0.9980mL0.0499g0.05008mL0.1005g0.1007mL0.4995g0.5012mL0.9922g0.9957mL0.0497g0.04987mL0.0999g0.1001mL
I can see many of the reactions I have described. The “feel” of the sample will change depending on temperature. For example, 1 liter is a good starting point for any given reaction. A 50mL bottle of iced water gives you a different feeling about the sample.
I added 500μL and then used 100μL to adjust the temperature. The 50 μL would have been 1.48mL and 1.25mL. The 50 μL would have been 1.55mL, 0.9952g0.9972 g0.9734g0.1011g0.9914g0.9945g0.9979g0.9972g0.9828g0.9963g0.9914mL.9947g0.9944g0.996g0.9949g0.9955mL Temperature adjustment1mLTemperature adjustment50μL Temperature adjust0.5048gTemperature adjustment0.5067g0.999998%0.518859%0.518819%0.518817%0.518818%0.518560%0.418627%0.418625%0.418620%0.422893%0.423698%0.418632%0.423703%0.427691%0.427694%0.426008%0.429838%0.434453%0.433986%0.434787%0.434792%0.429735%0.434791%0.425779%0.435009%0.435014%0.425157%0.436122%0.436130%0.436122%0.436139%0.436122%0.436141%0.436136%0.436138%0.436131%0.436163%0.436164%0.436161%0.436167%0.436164%0.436162%0.436173%0.436181%0.434167%0.436173%0.436184%0.412414%0.411745%0.411819%0.4114
I can see many of the reactions I have described. The “feel” of the sample will change depending on temperature. For example, 1 liter is a good starting point for any given reaction. A 50mL bottle of iced water gives you a different feeling about the sample.I added 500μL and then used 100μL to adjust the temperature. The 50 μL would have been 1.48mL and 1.25mL. The 50 μL would have been 1.55mL, 0.9952g0.9972 g0.9734g0.1011g0.9914g0.9945g0.9979g0.9972g0.9828g0.9963g0.9914mL.9947g0.9944g0.996g0.9949g0.9955mL Temperature adjustment1mLTemperature adjustment50μL Temperature adjust0.5048gTemperature adjustment0.5067g0.999998%0.518859%0.518819%0.518817%0.518818%0.518560%0.418627%0.418625%0.418620%0.422893%0.423698%0.418632%0.423703%0.427691%0.427694%0.426008%0.429838%0.434453%0.433986%0.434787%0.434792%0.429735%0.434791%0.425779%0.435009%0.435014%0.425157%0.436122%0.436130%0.436122%0.436139%0.436122%0.436141%0.436136%0.436138%0.436131%0.436163%0.436164%0.436161%0.436167%0.436164%0.436162%0.436173%0.436181%0.434167%0.436173%0.436184%0.412414%0.411745%0.411819%0.4114
I can see many of the reactions I have described. The “feel” of the sample will change depending on temperature. For example, 1 liter is a good starting point for any given reaction. A 50mL bottle of iced water gives you a different feeling about the sample.I added 500μL and then used 100μL to adjust the temperature. The 50 μL would have been 1.48mL and 1.25mL. The 50 μL would have been 1.55mL, 0.9952g0.9972 g0.9734g0.1011g0.9914g0.9945g0.9979g0.9972g0.9828g0.9963g0.9914mL.9947g0.9944g0.996g0.9949g0.9955mL Temperature adjustment1mLTemperature adjustment50μL Temperature adjust0.5048gTemperature adjustment0.5067g0.999998%0.518859%0.518819%0.518817%0.518818%0.518560%0.418627%0.418625%0.418620%0.422893%0.423698%0.418632%0.423703%0.427691%0.427694%0.426008%0.429838%0.434453%0.433986%0.434787%0.434792%0.429735%0.434791%0.425779%0.435009%0.435014%0.425157%0.436122%0.436130%0.436122%0.436139%0.436122%0.436141%0.436136%0.436138%0.436131%0.436163%0.436164%0.436161%0.436167%0.436164%0.436162%0.436173%0.436181%0.434167%0.436173%0.436184%0.412414%0.411745%0.411819%0.4114