"Do different concentrations of solutions determine the mass of a potato?" Introduction: The way to get the full results of this lab was through the process of osmosis. Osmosis is the movement of water across a membrane into a more concentrated solution to reach an equilibrium. When regarding cells osmosis has three different terms that are used to describe their concentration. The first of these words is isotonic. Cells in an isotonic solution show that the water has no net movement and the amount
Premium Concentration Solution
BUFFERS By: Luis P. Bazan‚ RPh.‚ Ph.D. A buffer solution is a solution of: 1. A weak acid or a weak base and 2. The salt of the weak acid or weak base Both must be present! A buffer solution has the ability to resist changes in pH upon the addition of small amounts of either acid or base. Consider an equal molar mixture of CH3COOH and CH3COONa CH3COOH (aq) H+ (aq) + CH3COO- (aq) Adding more acid creates a shift left IF enough acetate ions are present 16.3 Which of the
Premium Acid dissociation constant Buffer solution PH
At the end of the lecture‚ the students should be able to; 1. Define pharmaceutical solutions. 2. Discuss the advantages & drawbacks of pharmaceutical solutions as dosage form. 3. Explain the formulation components in pharmaceutical solutions. 4. Describe types of pharmaceutical solutions. Solutions are: Dosage forms prepared by dissolving the active ingredient(s) in an aqueous or non aqueous solvent. Solutions can be formulated for different routes of administration Orally: Syrups‚ elixirs‚ drops
Premium Concentration Ethanol Solution
The Holocaust- Final Solution The Final Solution was annihilation of the Jews. Hitler was the one that lead the Nazi’s to kill the Jews. The only way that this or even the Holocaust could have happened was because of World War II. Three things had leaded the Holocaust; if any of these were taken away it could have never happened. Firstly‚ Hitler had to bring all the Jews under his control. In 1939‚ he had only 1% of Jews under his power. In three short years in 1942‚ he had 75% of Jews under
Free Nazi Germany The Holocaust Adolf Hitler
What is the experiment about? The experiment is about finding the time it takes for a solution of neutrase and milk to clear when using different concentrations of neutrase. Why did I choose to experiment on how the concentration of neutrase effects the time a milk solution takes to clear? I could have chosen to test how the reaction times differed at different temperatures‚ but I chose to experiment on the effect different concentrations of enzymes. The reason I did this was because I felt that
Premium Concentration Chemistry Solution
effects of hypotonic‚ hypertonic and isotonic solutions on mustard green . OBJECTIVE : To study the effects of hypotonic ‚ hypertonic and isotonic solutions on mustard green . PROBLEM STATEMENT : How does the hypotonic ‚ hypertonic and isotonic solutions affect the mustard green ? HYPOTHESIS : An increase the concentration of solutions ‚ as decrease the percentage of change in most of mustard green . MANIPULATED VARIABLE : The concentration of solution . RSEPONDING VARIABLE : Percentage of change
Free Concentration Solution Sucrose
purpose of this lab is to find out how does the concentration of a saline solution affect the movement of the solvent molecules. Before the experiment‚ it was predicted that the saline solution in baggies would remain inside‚ without mixing with the water‚ and that the mass would not change. Throughout the experiment‚ the saline solution was added into the baggie‚ it was discovered that a small portion of the saline solution would leave the bag. In the baggie that has 0.2 percent concentration of
Premium Chemistry Water Solution
The Impact of Overfishing Overfishing has become an enormous problem all over the world. The impact of the increasing demand for fish and the advanced techniques made in the area of commercial fishing has caused some species of fish to be virtually extinct. In fact‚ some species like the giant bluefin tuna widely used by Japanese chefs and served in many restaurants‚ are now just few years away from extinction. Human demand for fish has increased enormously over the last several years‚ particularly
Premium Water Water pollution Pollution
Abstract In this experiment‚ the Ksp for calcium sulfate dihydrate‚ CaSO4·2H2O‚ by titrating 4 times a calcium sulfate dihydrate solution with diprotic EDTA‚ H2(EDTA)2-. For each trial we found the Ksp by means of molarities and activities. The results for the Ksp using only molarities was very different than the Ksp using activities. The average Ksp using molarity only was 2.26 x 10-4 and the average Ksp using activity turned out to be 2.31 x 10-5. The actual Ksp however‚ is 3.14 x 10-5. A percent
Premium Electric charge Gypsum Solution
How can government subsidies encourage overfishing? It is estimated that governments around the world give a total of about 30 to 40 billion dollars a year to help fishers keep their businesses running. Such money can help fishers by ships‚ fuel‚ and fishing equipment as well as for research and management of fisheries. Yet these subsidies encourage over fishing and the expansion of the fishing industry. This allows for methods to be used that cause overfishing such as trolling nets. 7. Describe
Premium Overfishing Fish