Concentrations

The Effect of Solution Concentration on Osmosis The aim of my experiment is to find out the effect of sucrose solution concentration on osmosis in potato cylinders. To do this I will conduct an experiment. Introduction To carry out my experiment, I will place the potato tubes into a solution containing part sucrose and part water. The potato tubes will all be cut out of the potato using a cork borer and will all be cut to the length of 25mm. This will remain

the sucrose concentration increases, then the rate of water movement increases. I have chosen to accept this hypothesis because my data proves it to be true. Based on my data, as the sucrose concentration is lower, the average change in mass is less than when the sucrose concentration is higher. This is because more water has to travel in or out of the dialysis bag in order to help dilute the high concentration of the solution in the beaker down to even it out with the concentration inside of the

Research question: What is the Osmolarity (solute concentration) of potato tubers deduce by measuring the loss or gain in mass of samples immersed in sucrose solutions of different concentrations for 24 hours? The concentrations of sucrose solution are 0.0mol 〖dm〗^(-3), 0.2mol 〖dm〗^(-3), 0.4mol 〖dm〗^(-3), 0.6mol 〖dm〗^(-3), 0.8mol 〖dm〗^(-3), and 1.0 mol 〖dm〗^(-3). Hypothesis: When plant tissues are immersed in sucrose solutions of different concentration, the cells will gain or lose water by osmosis and

Based on the experiment result, it supports my hypothesis that as concentration of sucrose increases the mass of potato will be decrease due to its temper is to make an equivalent concentration between the solution and potato. For instance, in the graph that above shows the first one on x-axis is the highest mass of potato that spent 5 days in distilled water. On the other hand, the fourth one is the lowest mass, which represents 4M sucrose solution of potato. Moreover, the data proves my prediction

An experiment to investigate the effect of changing the concentration of hydrochloric acid on the rate of reaction with sodium thiosulpahte. Aim I am trying to find out how the concentration of hydrochloric acid affects the reaction time with sodium thiosulpahte. If a clear solution of sodium thiosulphate is mixed with hydrochloric acid then a reaction will occur where a creamy-yellow precipitate of sulphur is produced. H20 Text Box: + Text Box: + Text Box: + Na2S203 2HCL

protein concentration of an unknown sample of BSA, and by using the standard curve. Abstract A spectrophotometer’s purpose is to use colors of the light spectrum to determine the concentration of light absorbing molecules in a solution. (p.59) In this particular lab, our mission was to determine the protein concentration and the standard curve of the unknown sample of BSA. This, by preparing five dilutions of the unknown solution of BSA together with other known concentrations, and then

Running head: THE CONCENTRATION OF The Concentration of Solutes affects the Rate of Osmosis Chintan Jani Biology 101-01 Dr. Reynolds October 6, 2016 Abstract The purpose of this lab was to observe the osmosis rates and mass changes of dialysis tubes. To this three-dialysis tubes with differing sucrose levels were tested on their rate of osmosis and weighed at 15-minute intervals. The results found described that as the sucrose level increases the rate of osmosis increased as well. Introduction

I believe that an average potato has a relative sodium chloride concentration of .17 moles. I also believe that an average potato has a relative glucose concentration of .95 moles. I have drawn these conclusions based on the data my classmates and I have collected as well as my knowledge of osmosis. When placed in various levels of sodium chloride solutions, the mass of the potatoes increased less the higher the concentration of sodium was in a given solution. For example, when placed in a solution

introduced to a different concentration of a sucrose and water solution. The sucrose solution, due to its density, did not enter the potato cells while the water was easily diffused into the cells through pores in their membranes. Water undergoes osmosis in situations where there is more solute in one area compared to another. It will then move towards the area with a higher concentration of solute, in this case the cytoplasm, and thus leave the area with a lower concentration of solute, the test tube

QUANTITATIVE DETERMINATION OF COPPER (II) CONCENTRATION BY SPECTROPHOTOMETRY D.DEL PRADO1, J. BELANO1, M.MAHUSAY2,and M.FRANCISCO2 1 DEPARTMENT OF FOOD SCIENCE AND NUTRITION, COLLEGE OF HOME ECONOMICS 2INSTITUTE OF CHEMISTRY, COLLEGE OF SCIENCE UNIVERSITY OF THE PHLIPPINES, DILIMAN, QUEZON CITY 1101, PHILIPPINES DATE SUBMITTED: 12 MARCH 2013 DATE PERFORMED: 7 MARCH 2013 ------------------------------------------------- ------------------------------------------------- ABSTRACT -------------------------------------------------