lab11 - Brandon Smith Chemistry 107 Experiment #11...

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Brandon Smith Chemistry 107 Experiment #11 Electroplating and the Measurement of Avogadro’s Number SUMMARY In this experiment, we measured the electric current that flowed through a solution and the time in which the experiment was done to come up with a value similar to that of Avagadro’s number. We used to electrodes, one copper and one tin and put them in a beaker filled with SnCl2. We connected the electrodes to a power source, connecting the positive to the tin electrode and the negative to the copper electrode. Then, using the LoggerPro, we recorded the current and the amount of time as the reaction took place. We found that the after approximately 10 minutes, that the tin electrode started to rub off onto the copper electrode, causing it to look like spikes were coming off the copper electrode. Weight of Copper and Tin Electrodes Prior to Experiment (g) Experiment 1 Experiment 2 Copper .7943 g .7885 Tin .6853 g .6932 Weight of Copper and Tin Electrodes After Experiment (g) Experiment 1
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This lab report was uploaded on 04/19/2008 for the course CHEM 107 taught by Professor Generalchemforeng during the Spring '07 term at Texas A&M.

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lab11 - Brandon Smith Chemistry 107 Experiment #11...

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