The precipitate from the filtration with the filter paper was put onto a watch glass. The watch glass with the precipitate was then transferred to the oven. After 20 minutes the watch glass was removed from the oven and weighed. The watch glass was then put back in the oven and the step was repeated twice.…
This can be titrated to determine the number of moles. Once equilibrium hits, the number of moles and weight of the sample can be determined.…
Procedure: Part A: Extraction stage 1. Place a 125 mL separatory funnel in a ring stand equipped with a small ring. 2. Heat the hot plate. 3.…
A graduated cylinder was used to measure 200mL of distilled water into an Erlenmeyer flask and then 40mL of 0.6 M NaOH was added to the distilled water in the flask. The flask was then plugged with a rubber stopper and shook in order to mix the solution. A buret was then washed, rinsed with distilled water, and then 5 mL of the NaOH diluted solution. After the cleansing of the buret, it was then filled up with the NaOH diluted solution. The dilution of the solution was calculated to find the molarity of the NaOH.…
After we got the grains measure we then poured them into a 300-400 mL beaker and added 100 mL of distilled water, We then stirred it right away and eventually…
Place a watch glass on top of the flask and allow cooling until the next class. Then filter out the remaining liquid, allow it to dry and then weigh it. With this information we can calculate the solubility of the compound in grams per liter. A flame test was then performed to determine the cations present in the compound.…
Visual comparison of the available solid and aqueous compounds to the unknown was done first so as to eliminate unnecessary testing. A 30.0 g/mL solution of the unknown was made in a beaker by dissolving 1.000 g of the unknown in 30.0 mL of distilled water. Before weighing out 1.000 g of the unknown, the scale was zeroed out with a piece of weighing paper (square cut-out of normal paper) on it. Using a scoopula, 1.000 g was the compound was carefully placed on the weighing paper and measured to exactly 1.000 g. These same measurements and procedures were used when solutions of calcium chloride and nitric acid were created using separate beakers. Portions of each solution were then poured into test tubes (exact measurements were not necessary for this step).…
You should have 10 clear test tubes, bath them by hot water. Test 1a: put a known solution in tube 1 and add three drops of each of the 10 cation solutions. Add 8 drops 6 M HCl solution to tube 1 and do it one more time. If it forms precipitate, you should continue add HCl. Record this data on table 1a.…
The alkaloid content was determined gravimetrically using [19]. 101 Five gram of each sample was weighed using a weighing balance and dispersed into 50 ml of 10% acetic 102 acid solution in ethanol. The mixture was then allowed to stand for about 4 h before it is filtered. The 103 filtrate was evaporated to one quarter of its original volume on hot plate.…
Identifying Unknown Substance. Examining the physical characteristics of the available compounds in the lab was how possible compounds were eliminated from any or further testing. Based on how the compounds physically looked, it was almost for certain that calcium chloride was the unknown compound. However, another compound was used to test as well (ammonium chloride) since relying only on physical characteristics alone would not allow for proper experimentation. The unknown ended up being calcium chloride, however, until the pH test, ammonium chloride was still a possibility because the ammonium chloride could have been ground up.…
A Hydrate’s Empirical Formula Aaron Meehan Ethan 11/06/17 Kotiba 09J I have read and agree to the terms of the Academic Honesty Statement. _ Aaron Meehan____________11/06/2017 _____________________ Student Signature…
Purpose Ibuprofen is one of the most common over-the-counter medications. It reduces pain and inflammation by limiting certain hormones. The drug is taken orally, usually in the form of a pill, and is absorbed into the bloodstream once it dissolves. Both human saliva and human stomach acid aid in dissolving the pill.…
Quantification of Iron in Whole Grain Cereal Jacob Rickman and Yasmeen Coan Submitted to: Curt Zanelotti CHEM 1045, Experiment No. 12, April 15, 2016 LABORATORY WRITTEN REPORT Honor Code Signature: _________________ Objective In this experiment, we gained an understanding of the relationship between chemistry and food products while developing and enhancing good lab techniques. We applied dilution concepts to carry out the experiment.…
The product was decanted from the anhydrous sodium sulfate crystals into another round bottom flask. This round bottom flask was pre-weighed and then weighed after the addition of the product for the weight of crude cyclohexene. A few drops of the pure product went into a GC tube for analysis. A few drops were added to a test tube and 2 drops of bromine were added for the bromine…
Dissolve all the potassium nitrate while continuously stirring. 8. Once dissolved, let the contents cool and once again record the temperature at which crystal form. 9. Repeat this process for a total of five trials.…