hypothesis proposed that if a small amount of salt was added to the reaction‚ then it cause the rate of the reaction to speed up‚ but if too much salt was added‚ then it will instead decrease the rate of the reaction. The data revealed that no additional amount of salt was the reaction that had the highest rate. As shown previously in the data table‚ the first trial’s average reaction rate of 4.5 mL/min was higher than the other two reaction rates where salt was added for trial 2 and trial3‚ 2.125 mL/min
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taken to dissolve Salt Aim: To see the effect of water temperature on salt. Hypothesis: If the temperature of the water is increased the time taken for the salt to dissolve completely will be shorter. Equipment Heat proof mat Tripod Bunsen burner Gauze mat Electronic Balance 2 beakers Measuring cylinder Salt Water Stirring rod Thermometer Safety glasses Stopwatch Plastic spoon Method: Take beaker and fill with 100ml of water Measure 5 grams of salt‚ put aside Place
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will have a weaker concentration than the potato‚ and the water molecules travel through a partially permeable membrane by osmosis. In a case where the potato is in a solution with a high concentration of salt‚ the potato mass will decrease because the potato is less concentrated than the salt solution‚ and the water will move through the partially permeable membrane into the stronger solution. On the other hand‚ if the potato mass remains the same after the
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How Much Water Does Epsom salts Contain? Purpose The purpose of the experiment was to find the percent of water in Epsom salts by heating it. To find the percent of water in a hydrate‚ the hydrate must be heated. The experiment did not only show how dehydration occurs‚ but this experiment also gives an accurate and definite portrayal of the amount of water that is removed Background Information A hydrate is any compound that contains water. An anhydrous compound is a hydrate in which the water
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However‚ for a metal ion indicator to be suitable in n EDTA titration‚ it must not bind as strongly with metal ions as EDTA does. Murexide is therefore suitable. AIM The aim of this experiment is to determine the percentage of nickel in a nickel(II) salt using EDTA. METHOD The following apparatus was collected: 50cmᶟ burette ●Glass stirring rod 20cmᶟ pipette ●Hydrated nickel(II) sulphate (NiSO₄.6H₂O) 100cmᶟ standard flask ●Standardised 0.10moll⁻¹ EDTA solution 250cmᶟ conical flask ●1 moll⁻¹ ammonium
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Seperatation Technqiues of Sand/Salt/Water Mixture Most of the material that are encountered in everyday life are not pure substances. Materials ranging from cement‚ food and ink are formed from physical combinations of various substances called mixtures. A mixture is a type of material that consists of two or more different substances that are not chemically combined. All mixtures can be separated back into its original state except for those that undergo irreversible change. A mixture can take
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Salt Of The Earth When I saw the cover of this movie I thought that I would not like it at all because it looked like an old movie and I really don’t like the black and white style. Watching it surprised me a lot. I was very moved and touched by the actual characters and the moral of the story. Knowing that this was not a fictional movie made it that much harder to not get emotional. There where many issues addressed in this movie with the Mexican-American mine workers. In this movie they make
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AN INVESTIGATION TO FIND THE EFFECT OF BILE SALTS OF ON THE DIGESTION OF LIPIDS I have investigated that if there is an effect of bile salts on the digestion of lipids in the milk. When lipids are broken down in to fatty acids and glycerol (see below)‚ the acid lowers the pH of the mixture. To help me determine and measure the digestion of lipids‚ a pH indicator phenolphthalein has been used to measure the pH of the mixtures. The pH indicator will change the colour from pink to either white (if
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Safety Wear goggles ‚ Follow instructors rules at all times‚ Don’t eat anything or drink‚ no horse playing in the lab Pre Lab Questions 1. Salts of higher valence cations (2+ or higher) are insoluble‚ unless they are chlorides or nitrates. Cations of +1 charge are soluble‚ except for silver. However‚ silver nitrates are soluble. Hydroxide salts of cations of +3 charge or higher are insoluble‚ except at low pH. 2. Precipitate is formed when substance is insoluble. The solubility rules determine
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This experiment explores how salt and sugar affect the melting rate of ice in water. Research Questions: * Does adding salt to ice and water slow down‚ speed up‚ or not change the rate the ice melts in the water? * Is salt the only substance to have this effect? What about sugar? Knowing how to speed up the melting rate of ice is very important information for anyone who needs to de-ice roads or driveways after a winter storm. While it seems simple‚ adding salt to ice water actually activates
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