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Determination relative atomic mass of lithium Evaluation Identify calculated error Any experiment can not in 100% accurate. Some errors are known and I can be calculated (e.g. the accuracy of the apparatus we use). Calculated errors for my experiment are listed below: Pipette: ?0.06ml 0.06/25=0.0024=0.24% Burette: ?0.05ml 0.05/42.50=0.00283=0.12% Balance: ?0.005g 0.005/0.13=3.8% Measuring cylinder (250ml): ??2ml 2/206.70=0.9% Measuring cylinder (100ml):?1ml 1/100.00=1% Identify way to improve my calculated errors From calculated errors above we can see that the measuring cylinder (100ml) was a relatively big error in calculated error. Its percentage error is 4 times larger than the error on pipette and 8.3 times larger than the burette this could be improved my using a more accurate volumetric flask (?0.06ml). This could dramatically minimize my most significant error from 1% to 0.06% according to my calculation below. Volumetric flask: ?0.06ml 0.06/100=0.06% Also the measuring cylinder (250ml) I have used to collect hydrogen was also a significant error. I could use a more accurate gas syringe instead, but we...

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