I need help with a physics lab. The whited out parts are incorrect work.

Part A:

SPH4U Name: Millikan Oil Drop Experiment For this experiment, you will be performing an analogue of Robert Millikan's famous Oil Drop experiment to determine the elementary charge - the smallest possible charge in the universe - the charge of an electron. Part A: An Analogue of the Oil Drop Experiment You are provided several envelopes, each containing an unknown number of identical paper clips. Determine the mass of each envelope and record it here. Envelope Empty A B C D E F G H 5.3 9.0 8.0 11.8 9.9 10.9 9.9 8.0 9.0 7.1 Mass [9] Use your data above to determine the mass of an individual paper clip. Be sure to explain your methods. (4) What are some limitations to this method for determining the mass of a hidden object? What could you do to be more sure of your conclusions? (2)For this experiment, you will be performing an analogue of Robert Millikan's famous Oil Drop experiment to determine the elementary charge - the smallest possible charge in the universe - the charge of an electron. Part A: An Analogue of the Oil Drop Experiment You are provided several envelopes, each containing an unknown number of identical paper clips. Determine the mass of each envelope and record it here. Envelope Empty A B C D E F G H Mass [g] 5. 3 9.0 8.0 11.8 9.9 10.9 9. 9 8.0 9.0 7. 1 Use your data above to determine the mass of an individual paper clip. Be sure to explain your methods. '4) What are some limitations to this method for determining the mass of a hidden object? What could you do to be more sure of your conclusions? (2)Part B: Examining Millikan's Data The following data was gathered for an experiment using Millikan's Oil Drop Equipment. The separation of the plates for this run was 5.0 mm and the electric potential difference was adjusted in order to cause the oil drops to stay at rest. 1 pg (picogram) is equal to 10-15 kg. Use these data to determine the charge on each oil drop: (3) Mass of Oil Electric Potential Difference to Electric Field Between Plates Charge on Oil Drop Drop [pg] Suspend Drop [N/C] [x 10-19 C] 3.2 140.0 2.4 147.0 1.9 290.9 4.2 214.4 2.8 428.8 2.3 176.1 3.5 214.4 3.7 566.6 2.1 160.8 3.9 597.2 4.3 263.4 2.5 382.8 3.1 237.3 3.4 173.5 2.2 673.8 Use the above charges on each oil drop to determine the value of the elementary charge. Explain your methods. (4) Why do you think such a large number of data points are needed? What would happen if there were not many? (2) Look up the accepted elementary charge and list it here. How confident are you in your answer now