COURSEWORK (CHEMISTRY) PLANNING: Skill Area P Write down the aim of your Investigation. To investigate the effects of change in concentration on the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid. Briefly describe your Preliminary Experiment and include your results. Explain how these results have helped you plan your main experiment (p8b). An increase in concentration will lead to an increase in the rate of reaction because there will be a greater number of particles per unit/cm3
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find the concentration (mole/dm3 (M)) of solute in a potato cell by using the process of osmosis and different concentrations of sucrose solution. Background information Osmosis is diffusion of water across a partially permeable membrane. It moves from a solution with less solute concentration (high water potential) to a solution with more solute concentration (low water potential). The one with a high water concentration is called a hypotonic solution and the low water concentration is called
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Event When World War II began there were 9 million people in concentration camps‚ when the war ended there were 3 million people. When the Japanese attacked Pearl Harbor President Ford put the japanese americans and the immigrants into internment camps because they looked like the enemy‚ the Japanese were not able to fight in the Military because they looked like the enemy. When Hitler became Chancellor he chose to put the Jews in concentration camps because he thought they looked like the enemy‚ Hitler
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Determining the Concentration of a Solution: Beer’s Law Purpose: The purpose of the experiment is to determine the concentration and formula of an unknown cobalt nitrate solution by measuring absorbance. Introduction: A Colorimeter will be used to determine the concentration and formula of an unknown cobalt nitrate solution. The colorimeter sends blue light from the LED light source to pass through the solution and hit a photocell. A solution with a higher concentration will absorb more
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million Jews” (Fact Retriever 1). Concentration camps were responsible for this act of mass murder. Many would hide for from those responsible for the camps. The Nazis built and run these camps to imprison those accused of committing crimes against the state or known as “enemies of the state”. During the holocaust‚ concentration camps left a mark on our society. First‚ they were created to detain so-called “enemies of the state”‚ so they were named concentration camps. In addition‚ the Nazi’s had
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Abstract: During the lab a better agent for absorbing Procion Red Dye was trying to be found. Using the different dilutions of a stock solution and a spectrophotometer an Absorbance vs. Concentration graph was created and using the trendline from that graph it was determined which agent‚ zeolite‚ magnetic zeolite‚ or charcoal were better at absorbing the dye. From the results collected it was found that charcoal was the best at absorbing the dye‚ when moles of dye per gram of agent used were calculated
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B1: The permeability of the cell increases enormously during the action potential. Comte Whitney Electricity is vital for neural function and communication. The semi-permeable membrane and presence of charged particles in solution (ions)‚ enables the cell to have control of an electric potential. The cell The concentrations of Na+ and K+ ions upon either side of a cell’s membrane are not equal. In order for the equilibrium to be restored‚ sodium will attempt to enter the cell‚ whilst potassium will
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The definition of holocaust is death by fire. Concentration camps were built to kill the inferior people. To Hitler‚ Concentration Camps were part of his finale solution of exterminating the inferior people to make his master race. In 1939‚ the Nazis had defeated Poland. Poland had around of 3‚000‚000 Jews. The Concentration Camps were located all over both East Germany and Poland. As the war went on and the Nazis kept moving forward they had to build more camps. The camps were spread out all over
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Gross Rosen concentration camp was originally established as a subcamp of the Sachsenhausen camp. Not all concentration camps were the same in the early 1940s‚ some camps had other uses for the nazis. On May 1‚ 1941 Gross Rosen became an independent concentration camp. About an estimate of 125‚000 prisoners half of these were women were send to Gross Rosen were in Gross Rosen. On June 8‚1941 the first group of Jews arrived to Gross Rosen concentration camp.
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change the concentration to what you need. 3.Take note of the amount of water in the measuring cylinder. 4.Put the marble chips and hydrochloric acid into the conical flask. Replace the bung and start the stopwatch. 5.Once the decided amount of time has passed‚ take note of the remaining amount of water in the measuring cylinder. Subtract this number from the one noted down in step three‚ this is the volume of gas produced. 6.Repeat experiment with at least 5 different concentrations of acid.
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