Reagent

Objective The purpose of this experiment was to use stoichiometry to calculate the volume and percent yield of CO₂ produced from a reaction of acetic acid (vinegar) with baking soda. Procedure First the balloon was weighed on its own, and its mass was 2.8 grams. Then the container with the sample of baking soda was weighed and its mass was 14.0 g. The baking soda was then placed into the balloon and the mass was 6.4 g. Lastly, the container minus the baking soda was weighed in order to

103 cells/well in 96-well plates and cultured overnight (16-18 h). On the following day, test compounds will be diluted in growth medium to the desired final concentration and then added to the cells. After 3-4 days of incubation, CellTiter-Gloc Reagent will be added and mixed. The plates will then be incubated for 10 minutes to stabilize the luminescent signal then read on a luminometer plate reader at 560 nm. GI50 values can be determined from semilog plots of percent of control versus concentration

Zeolite-Based Sorbent Coated with Iron for Advanced Oxidation of Trace Organics in Treated Wastewater Abstract Zeolite with an iron loading of 0.11% was used in a set of experiments to determine the possibility of using zeolite in conjunction with Fenton’s reagents in order to destroy p-Cresol in an aqueous solution. The results were compared to a homogenous system at a pH of 2.5 using iron salt with an equivalent iron concentration of iron-amended zeolite and the rate of degradation in the heterogeneous system

LABORATORY 3: LABORATORY 3: Basic Chemistry for Investigating Living Systems Abstract The purpose of this experiment was to explain how colorimetry can be used to qualitatively detect cellular chemical components; to chemically differentiate between proteins, sugars, starches, and lipids; to identify the roles of molecular components in living systems; to comprehend the value of using a systematic approach to research; and to describe why hypotheses, controls, standards, and quality control

Determine limiting reagent H2SO4 + 2 NaOH → Na2SO4 + 2 H2O NaOH H2SO4 Have 1.50g ± 0.67% * 1mol40.0g=0.0366 mol ± 0.67% 0.5 molL *0.02500 L ± 0.24% =0.0013 mol ± 0.24% NaOH is limiting 0.0366 mol ± 0.67% 0.0366 mol NaOH ±0.67% *1 mol H2SO42 mol NaOH= 0.0183 molH2SO4 ± 0.67%0 H2SO4 is limiting 0.0013 molH2SO4± 0.24% *2 mol NaOH1 mol H2SO4 = 0.0026 mol NaOH ± 0.24% 0.0013 mol ± 0.24% There is not enough NaOH to complete the reaction therefore H2SO4 is limiting. Table 2: Summary of

go into a reaction must be present in the product. Sometimes the proportions of two reacting molecules aren’t exact. When this happens, there is a limiting reagent and an excess reagent. The limiting reagent dictates how much of the product can be created, or “limits” the product. The opposite of this is the excess reagent. This is the reagent that has an “excess” of unreacted molecules. The amount of each product created can be determined by the amount of each reactant. The theoretical yield is

Grignard 5. Introduction In this experiment, an unknown Grignard reagent was prepared from an aryl halide. The unknown reagent was then reacted with carbon dioxide to form a carboxylic acid. The solid acid was then isolated and recrystallized before the melting point was taken. The precipitate was then dissolved in water and titrated to determine the molecular weight. The melting point and molecular weight were then used to determine the unknown acid obtained from the experiment. 6. Data and Results

synthesize triphenylmethanol using a Grignard reagent. A Grignard reagent is a carbon-magnesium halide, where the carbon acts as a nucleophile. As shown in Mechanism 1, it is formed by reacting an alkyl halide, in this case a bromide (bromobenzene), with magnesium metal in anhydrous ether. During the preparation of the Grignard reaction, another by-product, biphenyl, will be formed; this is caused from the rapid addition of bromobenzene to the Grignard reagent solution. However, the by-product will later

Grignard reagent using bromobenzene (the limiting reagent) and magnesium in an ether solvent. This Grignard reagent was then reacted with benzophenone, followed by an acidic workup, to produce triphenylmethanol. The ether solvent was used in this experiment because is helped to stabilize the Grignard reagent by coordinating its lone pair electrons, therefore donating electron density to a electron deficient magnesium molecule. Anhydrous conditions were required because the Grignard reagent is a reactive

Limiting Reactant (Experiment #8) CHM 1045L Lucy Garcia Misturah Abdulkareem, Alexander Gonzalez, Oluseun Fajimolu Dr. Abuzar Kabir Purpose/Abstract The purpose of this lab was to determine the limiting reactant in a mixture of to soluble salts and the percent composition of each substance in a salt mixture. Procedure/Method First, we were to measure and record the mass of a beaker, then transfer about 1 gram of the salt mixture into the