Project 1 Final Lab Report.docx

For the conversion of units to that used by an online

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for the conversion of units to that used by an online source but this required a skill we did not have at our level of learning. The other two tests (solubility and pH ), however proved to be very
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unhelpful in narrowing down the list. All the substances we tested turn out to be soluble to water and had similar pH measures. The test results could have applied to multiple different compounds so we could not further simplify our list to a smaller one that would get us closer to knowing the identities of our salts. These results placed us at standstill for identifying the salts until we could do more experiments the next week. Part 2: Based on the results from week two, we were more likely able to narrow down to what the actual substance were. When the substances were mixed with what we believed them to be insoluble in, a precipitate was formed which confirmed the validity of the substances identity. We did this by reacting the substances with different other compounds to see if our unknown salt would dissolve. If it did not dissolve then we can determine that it is insoluble and forms a precipitate with our known salt. We then used this to find the compounds on our list that react the same way with our known compound and thus could determine the identity of our unknown salts. Sources of Error: There could have been sample contamination or even inaccuracy in our readings from the conductivity meter. Other sources of error could include faults in our lab procedure if research was not done or the sources used were unreliable. The use of a pH strip is less accurate and you’d have to estimate the pH number after determining which color on the scale it closest to, which could obscure our results. Not rinsing with HCl and DI Water! Conclusions:
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Our hypothesis was not in line with the results determined at the end of the experiment. We made the assumption that all the unknown samples given would have sodium due to high amounts of it normally being found in seawater. However this is not the case only one of our samples contained sodium not all of them like hypothesized. Based on our results were able to determine the identity of the the unknown samples. With A being Ammonium Chloride , C being Calcium Nitrate ,and D being Sodium Oxalate . Research Connection: In the scholarly article, researchers investigate ways to solve the environmental problem surrounding mining. That is “potential leaching of trace elements from overburden and byproduct streams of processing plants”. And in order to identify trace elements of these
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