Acid mine drainage

Before beginning any of the tests the food samples were selected and separately blended in a small blender with water. This step was necessary for the food samples to fit into test tubes. Each food sample was left in a separate beaker to await the experiments. The first step of test 1a was to prepare 6 test tubes. They were labeled by what their future contents would be. The control for this experiment was a glucose standard solution; it would test positive for reducing sugars. 1.5mL of the…

The purpose of today’s lab was to determine how effective antacids are at neutralizing HCl. This experiment required us to place 3 antacids tablets into 3 Erlenmeyer flasks. Next we were required to add 50.00 mL of 0.500M HCl and five drops of phenolphthalein. Finally, we needed to titrate NaOH into the flasks. Each antacid brand required a different amount of NaOH in order for it to be completely titrated. The data collected from the experiment allowed each group to calculate the cost…

this lab, benzoic acid, benzocaine, and 9-fulorenone are isolated from a three-component mixture by using the acid-base extraction and other following types of various extraction techniques. An acid-base reaction is utilized in order to isolate the individual species from the mixture. First, in isolating the base benzocaine, proton transfers occurred via reaction with hydrochloric acid, which led to a significant shift in the polarity of the said compound, although the conjugate acid of…

Truc-Nhi Do Separation of a Mixture The purpose of this lab was to separate a mixture, calculate the percent composition by mass, and find percent error. I first started out by taking the mass of each component of the lab. I used the infiltration method to allow the salt and water solution, a blended mixture, to pass through the filtration paper and into the beaker. A trick to know if something is a solution is to see is it has the aqueous sign (aq) in the formula, like NaCl(aq). This step…

measured. 1 gm leaf sample was taken and chlorophyll a+b, carotenoids were measured (Aron, 1949). For biochemical analysis, 1 gm ground leaf sample was homogenized in 2 ml of 0.1 M ice cooled phosphate buffer containing 0.1 mM ethylenediamine tetra acetic acid and 1% (w/v) polyvinylpyrrolidone and inoculated 30 min in ice. This homogenate sample was centrifuged at 10000 rpm for 30 min at 4ºC and supernatant collected. The supernatant was assayed for Catalase (CAT), Superoxide dismutase (SOD),…

Slime was first created in 1976 by mattel ( A toy company) it was sold in little green trash cans. It was not stretchy or soft it didn't settle, or react to touch. The original slime was not made with pva or borate it was made with guar gum and didn't have an appealing texture. Slime is now sold across the world in shops online the main seller is Etsy but other slime sellers branch out and create their own websites. Like for example GlitterSlimes (Nicolette) started on Etsy and made her own…

8 Indian kitchen ingredients that are of great help in treating Mouth ulcers!! Mouth ulcers, also called Aphthous ulcers, are sores appearing in the mouth, mostly inside of the cheeks, that can be quite painful while drinking, eating, or brushing teeth. Mostly mouth ulcers are harmless and clear up on their own but if these sores persist more than 3 weeks, medical advice is necessary. The exact cause of mouth ulcers is unknown and is mostly varies from case-to-case. However, still there are many…

It does so via the use of two-component systems, one of which is called PhoPR two-component system6. In order for Mtb to survive, it must synthesize its own biotin, an essential cofactor that is involved in the biosynthesis of some fatty acids (e.g. mycolic acid), from pimeloyl-CoA7. During infection, Mtb primarily resides in macrophages, which, normally,…

Abstract: When an acid and a base combine, the base neutralizes the acid in a chemical reaction. This is how an antacid works (Gomez). During this project, we will test which of the 3 generic brand antacids chosen are most potent in neutralizing lemon and grape juice. This can be helpful in a real life situations, if you are experiencing heartburn, acid reflux, and/or dietary problems. This experiment will help you decide which antacid actually diffuses the acid in your stomach and has the…

5967M) * (65.05 g/mol) = 35.85 g/L 4) Percent Acid ((g/L)/(given density)) * 100 ((35.85 g/L)/(1005 g/L)) * 100 = 3.57% UNKNOWN ACID 1) Moles of NaOH ((Vf - Vi)/1000) * M Run #1: ((31.11 – 0.51)/1000) * 0.2116m = .006475 Run #2: ((31.35 – 0.38)/1000) * 0.2116m = .006553 2) Calc Moles of Acid because 1:1 ratio moles acid equals moles NaOH moles acid = Run 1: .006475 and Run #2: .006553 3) Molar Mass (grams used/moles acid) Run #1: (1.3160g/.006475) = 203.24…