Inorganic chemistry

Before the start of the experiment, the theoretical yield was to be calculated. First, the limiting reagent was determined from the reagents by comparing the amount of moles. Among the three reagents involved in this experiment - camphor, sodium borohydride, and methanol, camphor was found to be the limiting reagent. The moles of camphor was less than the combined moles of the other two reagents. The theoretical yield, which is the amount of product that could be possibly produced after the completion

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Post-Lab Questions Pages 524 – 528 3. a. Since the pKa value of sulfuric acid (-3) is smaller than that for nitric acid (-1.3), sulfuric acid is a stronger acid. b. The chemical equation for the equilibrium involving the reaction of sulfuric and nitric acids is as follows: H2SO4 (aq) + HNO3 (aq) HSO4- (aq) + H2NO3+ (aq) c. Calculations used to determine the value of Keq for the acid-base reaction in Part b are as follows: Keq = (Ka1) x (1 / Ka2) Keq = (103) x (1 / 1013) Keq = 10-10 7. The nitro

What fulvalenes are and how can we synthesis fulvalenes containing chalcogen on their molecule type. Compounds like benzophenon, thiobenzophenone and selenobenzophenone are some fulvalenes that contain Oxygen, Sulfur and Selenium. The preparation of those compounds is different for each one, however, benzophenone can be the counteract to synthesise the others. A fulvalene is a hydrocarbon obtained by formally cross-conjugating two rings through a common exocyclic double bond. The name is derived

Our task is to find out the number of pre-1982 pennies and post-1982 pennies inside a sealed vial. Firstly, we need to gather all materials that we need: Digital Scale, empty vial, and a sealed vial with pennies inside. If we’re supposed to estimate the number of old pennies and the number of new pennies, we have to measure what both of them weigh. We also needed to measure the weight of the vial itself, that is why we needed an empty vial. After we did the measurements, we found that an old penny

The reason a egg can float in saltwater is that saltwater has a higher density than freshwater. The density increases with salt concentration, so the amount of salt you need might depend slightly on the egg. A good starting point would be 6 tablespoons of salt in 1 glass of water (make sure it is fully dissolved by stirring). If the egg does not float, just add some more salt. You want to know how much salt it would take to have an egg float in water. An object, such as an egg or a boat, can float

Ethylene glycol (antifreeze), chemical formula C2H6O2, is made up of 2 carbon ions (C), 6 hydrogen ions (H), and 2 oxygen ions (O). This ionic compound is used as an engine cooling and de-icing fluid, and when it's mixed with water, ethylene glycol has a freezing point of -45 degrees Celsius, making it perfect for icy winter conditions. When dissolved in water, ethylene glycol disrupts hydrogen bonding, therefore preventing ice from forming. As water freezes, it gets bigger and crystallizes, however

Use 25 pipette filler by attaching a 25 ml tube, pulling up the water by pushing the button on the pipet to make it go up to 25 ml and let go of the button. 250ml of water You pour 250 mls of water in a 250 ml graduated cylinder or you can use the pipette filler by attaching a 100 ml, 100 ml, and 50 ml serological pipettes to the pipet gun. Attach the one tube at a time (Do not use the same tube more than once) Pull the water up by pushing the botton up and when it reach the measurement then stop

The most polar molecules on a chromatography strip move the least, and the least polar molecules move the most. Out of red dye #40, blue dye #1 and yellow dye #5, the molecules in blue dye #1 have the polarity closest to both isopropyl alcohol, and sodium chloride solutions. Red dye #40 has the most polar molecules, while blue dye #1 has the least polar molecules. After 7 trials of chromatography in a 2% isopropyl alcohol solution, blue dye #5 had an average rate of flow of .948. Red dye #40 had

The freezing point of a substance is when the substance turns from a liquid to a solid. The freezing point of a solvent can be decreased by adding a solute and making a solution, which is a freezing point depression. From knowing the temperature difference between a pure solvent and a mixture, it is possible to find the molar mass of the solute. To begin the experiment, students first obtain a LabQuest with a temperature probe. First, you retrieve about 20gs of t-butyl alcohol and put it in a pre-massed