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Determining the Ksp of Calcium Hydroxide April, 28 2017







The Effect of Concentration on Solubility April, 26 2017







virtual chemistry: similar to a real life? March 6, 2017 Faith Fenstermacher, Hannah Bowers

Drinking water contamination kit January 5, 2017

Purpose: The purpose of this lab is to determine which metal is more active then other metals, by collecting water samples from various clients and bringing them back to the lab for testing. But to make it easier we are testing them right on the stop with an analysis kit that will hopefully help us identify the metal contamination while working right at the job site.

Data/Calculations: rank and metals 1- Aluminum 2- Zinc 3- Iron 4- Lead 5- Copper

solutions: 1. copper sulfate- Zn, turned purple; Fe, flooded to the middle but has white stuff on the bottom of the bowl, same color; Al, has bubbles and is white in color. 2. iron chloride - Zn, turned a red in color; Al, noting; Cu, cloudy. 3. zinc chloride - Fe, nothing; Al, nothing; Cu, nothing. 4. lead nitrate - Zn,darker in color; Fe, nothing; Al, turned white in color; Cu, nothing;

conclusion: In this lab we came to the conclusion that aluminum is the most reactive compared to other metals. Determination of Hydrate November 30, 2016

Purpose: The purpose of this lab is to test a hygroscopic ionic compound to determine it's water of hydration. In this lab we will be heating a sample of the compound to drive off the water of hydration. By measuring the mass of the sample before and after heating, we will be able to determine the amount of water in the sample and calculate its water of hydration.

Data/Calculations: The mass of the crucible - 20.90 grams The mass of crucible and hydrated (wet) sample - 21.88 grams The mass of crucible and dehydrated (dry) sample (1st weighting) -21.53 grams The mass of the hydrated (wet) sample - 0.98 grams The mass of crucible and dehydrated sample (2nd weighing) - 21.53 grams The mass of crucible and dehydrated sample - 21.53 grams The mass of dehydrated sample -0.63 grams The mass of water evaporated - 0.35 grams

Calculation moles of water - 0.0194 Calculation moles of dehydrated - 3.95 x 10-3 finial: Calculation moles of hydrate - 5

Conclusion: Our consultation to the lab is that there are 5 hydrates. In the lab we had to heat up the sample and try and figure out the proper hydrates in order to find out how many water molecules there is. We learned that we had to heat to for exact time and let it cool for exact time. Also we learned that is we didn't heat the sample long enough that the subsequent calculation would have less hydrates and we wouldn't have gotten to correct numbers.







































My favorite thing is always trying something new!