Ocean County College Department of Chemistry [Observations of Chemical Changes] Submitted by Andrew Grimm Date Submitted: 5/31/14 Date Performed: 5/31/14 Lab Section: Chem-181DL2 Course Instructor: Amal Bassa Purpose The main goal in this experiment is to observe the properties of simple chemical reactions, and relating their chemical properties to household products. Procedure To begin this experiment I placed two drops of NaHCO3 into well A1 of the 96-well plate, and then added two drops of HCl into well A1. Next I placed two drops of HCl into well B2, and added two drops of BTB, and observed the color. Then I placed two drops of NH3 into well C1 and added one drop of BTB, and observed the color. Next I added two drops of HCl into well D1, and then added two drops of blue dye, and recorded what I saw.
Mixed Solutions: If 1 mmole of glucose (180mg=1mOsm) and 1 mmole of NaCl (58mg=2mmOsm) are put into a beaker and distilled water added to make 1 liter, the osmolarity is 3 mOSm/L. OSMOSIS CALCULATIONS: 1. Calculate the number of grams of NaCl needed to prepare 100 mL of a 280mOsm.L Solution. (280mosm/l) *(1L/1000mL)*(100mm/1)*(29mg/1mosm)*(1g/1000mg)=0.812g 2. Calculate the number of grams of glucose needed to prepare 100mL of a 280 msm/L glucose solution.
Liquid-liquid extraction Informal report By: Afi Ahmed 100959296 Presented to: Devien Durbano CHM2203 May 26th 2014 Results and calculations Table 1: Mass of mixture containing benzoic acid, 2-naphthol, and hydroquinone dimethyl ether and recrystallization. Mass of mixture: 3.03g Compound | Original mass | Recrystallized mass | Benzoic Acid | 1.01 | 0.14 | 2-naphtol | 1.01 | 0.43 | Hydro. Dimethyl ether | 1.01 | 0.16 | With these values we are able to calculate the percent recovery for Benzoic acid, 2-napthol and the hydroquinone dimethyl ether. 1) Percent recovery for isolation of benzoic acid % Recovery = mass of recovered material _________________________________ x100% mass of starting material = (0.14/1.01) x100% = 13.86% That concludes that the percent recovery is 13.86%. 2) Percent recovery for isolation of benzoic acid % Recovery = mass of recovered material _________________________________ x100% mass of starting material = (0.43/1.01) x100% = 42.57% That concludes that the percent recovery is 42,57%.
Aldolase B is considered the chief aldolase isoenzyme that is responsible for fructose metabolism and gluconeogenesis within the liver. This is turn, produces fructose 1,6-biphosphate from the glyceraldehyde-3-phosphate and dihydroxyacetone phosphate. When fructose is ingested, the body cannot change its energy storage substance glycogen to glucose. When glucose builds up in the liver, the blood sugar falls resulting in hypoglycemia. (PubmedHealth, 2009) Fructose 1 phosphate which is the substrate of Aldolase B is split by Aldolase.
NADH and FADH2 16. How many of each type of energy carrier is yielded from one pyruvate molecule? 3 NADH and 1 FADH2 17. In which stage of aerobic cellular respiration will the energy carriers be used? Electron transport chain and chemiosmosis 18.
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Exploring enzymes through Lactex. Problem: Does pH affect the results of Lactex? Independent Variable: pH value Dependent Variable: Glucose Control: Lactex enzyme Hypothesis: I think pH will cause the result of Lactex to change. Materials: · Soap (basic) · Antacid (basic) · Soda (acidic) · Vinegar (acidic) · pH test strips · eye dropper · Cow’s milk Experimental Design: 1. Set up plastic cups 2.
Lactase Buffer solutions 4,7,9 Enzymes are organic catalysts that control the rate of chemical reactions in cells while not being permanently altered themselves. In general, enzymes speed up the rate of reaction by lowering the activation energy required to start reactions. Lactase is an enzyme used by the body to hydrolyze lactose, a disaccharide unique to mammalian milk, into the monosaccharaides, glucose and galactose. Lactose has been shown to aid in the absorption of several minerals, including calcium, magnesium, and zinc. .
StudyBlue Flashcard Printing of Lab Final 2211L UGA http://www.studyblue.com/servlet/printFlashcardDeck?deckId=... In the distillation experiment, the purpose of a fractionating column was to Which liquid would be most easily separated from water by simple distillation? 1. 1-propanol (bp=97 degrees C) 2. 2-propanol (bp=82 degrees C) 3. tetrahydofuran (bp=65 degrees C) 4.
It is composed of two monosaccharaides: glucose and fructose. When fructose is broken down,