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Concentration Essays

Investigate the effects of osmosis on potato cell sap

I have been asked to investigate the effects of osmosis on potato cell sap. I will test potato cylinders in different strengths of sucrose solution and record any results in a table. I will then analyse my findings and work out the isotonic point of the potato cell sap. Prediction …

Biology lab report of osmosis

CONCLUSION: In this experiment the length of the potato cylinders is affected by osmosis. As the water moves in or out of the potatoes, the potatoes swell or shrink, thereby reducing or increasing in size or length. From the graph it can be inferred that the there is a negatively …

Analysis of Food Dyes in Beverages

Different amounts of FD&C Blue I were diluted with water to make eight differently concentrated 10 mL solutions. Samples were placed in the spectrophotometer to determine the percent transmittance of FD&C Blue 1. All of the data was summarized in graphs to predict the concentration of FD&C Blue I in …

Enzyme Controlled Reactions Lab

1)Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases? A) The relationship between the substrate concentration and the initial reaction of an enzyme-catalyzed reaction is very productive, but …

Rates of Reaction: Hydrochloric Acid + Calcium Carbonate

Background Information: Hydrochloric acid is a clear, colourless, highly-pungent solution of hydrogen chloride (HCl) in water. It is a highly corrosive, strong mineral acid with many industrial uses. Hydrochloric acid is found naturally in gastric acid. Calcium carbonate is a chemical compound with the formula CaCO3. It is a common …

Lab Report Example

Introduction: Diffusion is the net movement of small or uncharged molecules or substances from areas of higher concentration to areas of lower concentration. There is simple diffusion, as explained, and facilitated diffusion. Facilitated diffusion, on the other hand, involves larger or charged molecules or substances that need a protein tunnel …

Preparation and Standardization of a Sodium Hydroxide Solution

Objective/Purpose: The objective of this experiment will be the standardization of sodium hydroxide using potassium hydrogen phthalate by the titration method. Introduction: The concentration of solutions can be reported in terms of molarity and normality. Molarity is equal to: HCL, HBR, H2SO4, HNO3 M = mol Solute (mol) (Monoprotic) (Diprotic) …

Riboflavin Fluorescence Spectra

Experimental Section: Include all details on preparation of standard solutions. Also include the vitamin tablet brand name; the listed mass of vitamin B2 per tablet; procedure used for extraction of the tablet and dilutions performed. The experiment began by determining the best wavelength at which to excite the riboflavin molecule, …

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