table 1.1‚ it is shown that at wavelength 590nm‚ bromophenol blue has the Amax which is 0.752. Part 2: The effect of concentration on absorbance of bromophenol blue solution Table 1.2a Tube 1 2 3 4 5 6 A B Distilled water(ml) 2.5 2.0 1.5 1.0 0.5 0 Bromophenol blue 10mg/L (ml) 0 0.5 1.0 1.5 2.0 2.5 Concentration of bromophenol blue(mg/L) 0 2.0 4.0 6.0 8.0 10.0 Absorbance at 590nm (Amax of bromophenol blue) 0 0.182 0.284 0.437
Premium Solution Curve Concentration
______ 1. Background: Potato is a starchy‚ tuberous crop from the perennial “Solanum tuberosum” of the Solanaceae family (also known as the nightshades). It originated from the area of present-day southern Peru and it’s now grown worldwide. Potatoes were first introduced outside the Andes region four centuries ago‚ and have become an integral part of much of the world ’s cuisine. It is the world ’s fourth-largest food crop‚ following rice‚ wheat‚ and maize. Wild potato species occur throughout
Premium Potato
reactions where the active site is being involve in coordination to a metal ion. PROCEDURE: (A) Preparation of Trans-Dichlorobis(ethylenediamine)cobalt(III) chloride 1. About 16g of cobalt(II)chloride hexahydrate is dissolved in 50ml of distilled water in 250ml of Erlenmeyer flask. 2. 60ml of 10% solution of ethylenediamine is added into the flask. 3. A vigorous stream of air is being drawn through the solution for about 1-2 hours 4. 35ml of concentrated hydrochloric acid is added 5. The solution
Premium Chlorine Hydrochloric acid Solvent
Polypeptides‚ better known as proteins‚ carry out nearly all of a cell’s functions. A protein is made up of at least one or more amino acid polymers. The necessity of proteins for life is unequivocal‚ not only do they help to form the structures of cells but they act as enzymes in reactions of the body1. Enzymes are biological catalysts that lower the amount of activation energy needed in carrying out biochemical reactions1. Enzymes are responsible for almost every reaction that occurs in a cell
Premium Protein Metabolism DNA
blender‚ added water and salt to them‚ and the added laundry detergent before using contact solution as an enzyme. Rubbing alcohol was then poured into the mixture and the DNA was extracted and put into a small container so that it could be weighed. This experiment gave the researcher the knowledge that bananas do in fact have more DNA than watermelon. The results were recorded in a chart and expressed through tables and graphs. . Emphasis To create a lab using the scientific
Premium Fruit Watermelon Hypothesis
Enzyme Lab Experiments Problem: How can we demonstrate how enzymes work? What happens if we alter the environment of an enzyme? Materials: G;lucose Test Strips Test Tubes Pipettes Raw Hamburg Lettuce Potato Raw Liver Chalk Beakers Dairy Lactose Tablet Water Sugar Solo Cups Hot Plate Knife Gloves Skim Milk Glow Sticks Peroxide Hypothesis: 1. If we change the environment via temperature the glow stick will Its intensity will change 2. If hydrogen peroxide is added to a certain food liver
Premium Oxygen Enzyme Hydrogen peroxide
extensive properties‚ and intensive properties. Where do the units for mass and volume) come from and what do they mean? What is the density of distilled water? What is Archimedes principle? Does temperature affect the density of a solid? Liquid? Gas? Materials: Safety glasses‚ 10‚ 25 or 50 mL graduated cylinders Distilled water Metal Samples W‚ X‚Y & Z Procedure: 1. Class split into 5 groups. Every group will get data for four metals and tell it to the class 2. Choose a
Premium Water Liquid Density
tubes in the 40 degrees celsius water bath and incubate them for 10 minutes. The other thing needed is glucose strips. After the tubes have been incubated for 10 minutes‚ place a glucose strip in each tube for one second. Let it sit for thirty seconds‚ then compare to the chart provided. For unit 7.4 the experiment called for two microfuge tubes. One labeled "control" and label another one "EDTA". Add 1.25 mL of EDTA to the EDTA tube‚ add 1.25mL of distilled water to the control tube. Add 3 drops
Premium Null hypothesis Enzyme Disaccharide
The History of the Potato Chip One of the most recognizable snack foods is the potato chip. Who can resist this thin slice of potato‚ fried into a crisp then salted? Potato chips are delicious and very popular. They satisfy the taste buds of many by hitting all the essential characteristics of a good treat. They are convenient‚ easily found‚ salty‚ greasy‚ and come in a wide variety of flavors. It is hard to believe their invention was a mistake. When George Crum‚ a Native American chef in Saratoga
Premium Potato chip Potato French fries
limiting reagent between the reaction of lead (II) nitrate and potassium iodide. To determine the percent yield of lead (II) iodide. Date Started: 13/4/12. Finished: 19/4/12. Data collection and processing Measurements: * Amount of distilled water: 75.0ml ± 0.5ml. * Mass of watch glass: 31.65g ± 0.01g. * Mass of watch glass + potassium iodide: 32.45g ± 0.01g. * Mass of potassium iodide: 0.8g ± 0.02g. * Mass of watch glass + lead (II) nitrate: 32.66g ± 0.01g. * Mass of lead
Premium Stoichiometry Yield Molecule