I didn't actually do the lab because I got switched into the class after it had already started so I just used another person's results for my lab. I noticed the data seemed really off as well, but this is the data I have to use. The procedure is silver nitrate into the distilled water, copper wire coiled and into the silver nitrate, overnight, shake off the silver on wire, pour through filter paper, dry silver and weigh it. I think the reason why the data is so inaccurate is because the copper wire they used was too thin and broke under the weight of all the silver on it. If that were the case that would make copper the limited reagent, meaning alot of the silver ion didn't react. I'm not sure what happen though cause I wasn't there to see it.