the Calcium Carbonate out of the beaker and into the filter during step 5‚ would your percent yield be larger or smaller? If you do not wash all of the Calcium Carbonate out‚ then the percent yield would be smaller because there is enough calcium carbonate left in the beaker that would have attributed to the final yield. b. If you used tap water instead of DI water what do you think would happen? Why? If you used tap water‚ the coffee filter would have weighed more after the calcium carbonate went
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CONCLUSION After many class lab days‚ I concluded my unknown was Calcium Carbonate due to results from the Flame Test and Anion I Test. Throughout our lab days‚ my friends would help me determine various odors and colors of the substances which allowed me to confirm my answer. Also‚ I looked select test results up on the internet to see if they matched my observations. On our first lab day‚ I received my bottle and noticed a white precipitate in the bottom therefore‚ my unknown was insoluble. I
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Investigating Factors That Affect Rates Of Reaction Aim: How does the mass of calcium carbonate affect its rate of reaction with hydrochloric acid? Hypothesis: I hypothesize that when the mass of the calcium carbonate increases‚ the rate of reaction of the calcium carbonate and hydrochloric will also increase. The collision theory states that the more successful collisions there are within the reaction‚ the faster the rate of reaction. When the mass increases‚ so does the number of particles
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sodium carbonate. Na2CO3 – reason for process Waste products - CaCl2‚ calcium chloride - Heat Chemical properties of the main product (Na2CO3) - Forms several hydrates which are used in many ways - It is moderately alkaline‚ so it can neutralise strong acids - Can precipitate many metal ions from solution as carbonates Uses of sodium carbonate - Glass manufacturing (most common use) o Used as a flux gas which lowers the melting point of the silicon dioxide and the calcium carbonate
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aim of the experiment is to find out the amount of calcium carbonate in toothpaste through back titration since calcium carbonate does not dissolve in water. A roughly weighed amount of calcium carbonate is mixed with hydrochloric acid and then titrated against sodium hydroxide. When the indicator turns from pink to orange‚ the volume of sodium hydroxide used is taken down. After doing some calculations‚ the average percentage of calcium carbonate in toothpaste is 19.2%. This average percentage is
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concentration on rate of reaction Plan: We are investigating the effect of nitric acid on calcium carbonate. We are doing this experiment‚ as we would like to understand the effect that acid rain has on limestone. We also want to understand how acid can have an effect on rate of reaction. The word equation for the reaction that will take place is: Calcium Carbonate + Nitric Acid Calcium Nitrate + Carbon Dioxide + Water The balanced symbol equation is: CaCO3 + 2HNO3
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reacting with calcium carbonate will result in fewer or more collisions between particles‚ so the calculated rate will
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when used. AIM: To determine the effectiveness of Calcium Carbonate and Sodium Carbonate when used to treat heartburns. APPARATUS: Measuring Cylinder‚ Beakers‚ Spatula‚ Conical Flask‚ Measuring Scale‚ Funnel‚ Dilute HCL‚ Calcium Carbonate (Present in Tums)‚ Sodium Carbonate (Present in Andrews Salts)‚ Petri Dish‚ Rubber Stopper‚ Gas Syringe METHOD: 1. Wash all apparatus. 2. Measure and transfer 5g Calcium Carbonate to Petri Dish. 3. Measure and
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kettles and washing machines. The chemical name for lime scale is calcium carbonate‚ chemical formula CaCO3. It is usually caused by hard water (Water containing a higher than normal concentration of dissolved minerals such as calcium and magnesium). http://www.purewaterpeople.co.uk/blog/2013/06/what-is-limescale/ How is lime scale formed? Lime scale is built up over a long period of time. When hard water evaporates the calcium carbonate deposits are left behind and over time they start building up
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dissolved minerals. (2) Some of the minerals come from chalk‚ limestone or marble‚ which the water may have flowed over or through. (4) Hard water contains calcium or magnesium ions. Limestone‚ marble or chalks are insoluble in pure water however they will dissolve slowly in acidic rain. If your water has emerged through limestone or chalk (calcium carbonate) it will be hard. (1) Soft water is gratification water in which the only cation (positively charged ion) is sodium. The minerals in water give it an
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