Observing a Limiting Reactant An experiment was carried out to predict the limiting reactant in a chemical reaction between Magnesium and Hydrochloric acid‚ using the mole concept. Limiting Reactant: It is the reactant that will deplete or will be used up first during a chemical reaction. Limiting reactant also determine how long the reaction will last for. Balanced Equation: Mg + 2HCl = MgCl2 + H2 The balanced equation is needed to determine the mole ratio between the two reactants. From
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control water group reflects my hypothesis‚ with near to no growth due to the mineral deficiencies within the solute. The tube containing Nitrogen has a very small and weak stem‚ and the tube containing Magnesium successfully grew large green leaves‚ supporting scientific evidence of plants using magnesium for chlorophyll production [later used in photosynthesis]. The tube containing Calcium had stunted and minimal stem and root growth‚ and barely grew at all over the week period. The orange plant
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iodide solutions Double replacement Yellow colored powder collected at the bottom Double replacement Magnesium metal and hydrochloric acid solution Single replacement The solution began to fizz. Proves to be flammable. single replacement Electrolysis of water decomposition The water bubbles In the tubes filled with H2 and O2 decomposition Burning magnesium combustion As the magnesium comes in contact with the CO2 it creates a bright burning light synthesis Conclusion: Write a balanced
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many electrons does Mg2+ have? (1 mark) Mg2+ has 10 electrons. A magnesium atom has 12 electrons with 2 of the 12 being valence electrons. Therefore the atom will lose the valence electrons which are located on the outermost shell to stabilize itself (outermost shell) as atoms tend to do what it easiest. Since magnesium lost 2 electrons it becomes positive as it is giving away electrons to stabilize other atoms. Hence magnesium then becomes Mg2+ because it lost 2 of the 12 electrons. Given that
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about how each is commonly found in NATURE (if you were walking down the street and picked some off the ground‚ in what form would it be? Would you have to be walking in a certain part of the world?) 1. Beryllium Be In Egypt in a rocky area 2. Magnesium Mg- Oceans and streams 3. Calcium Ca In limestone and in oceans/streams 4. Strontium Sr
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2-diphenyl-1‚2-propanediol‚ through an addition reaction pathway. Introduction: Grignard reagents are alkyl or aryl-magnesium halides that act as the nucleophile in Grignard reactions‚ where ketones are reacted with the reagent‚ then treated with acid to produce an alcohol. In the case of this experiment‚ methylmagnesium iodide was created from methyl iodide and magnesium metal. It acted as the Grignard Reagent in Part B upon which it was reacted with benzoin to create 1‚2-diphenyl-1‚2-propanediol
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Procedure First thing to do is to gather the equipment and materials needed for this lab. These include a magnesium ribbon‚ a crucible and cover‚ ring stand‚ iron ring‚ crucible tongs‚ burner‚ balance‚ and safety goggles. Once all the items are ready and available‚ then the lab can begin. Measure the mass of the crucible by itself and record the data. Then take the piece of magnesium ribbon and break it into small bits. Place the bits into the crucible and measure them together. Then place the
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the empirical formula of Magnesium Chloride. * Data 1. Mass of evaporating dish = 45.08g 2. Mass of evaporating dish and Magnesium = 45.17g 3. Mass of Magnesium: { 2 } – { 1 } = 0.09 4. Mass of evaporating dish and Magnesium Chloride First weighing = 45.48g (After heating and cooling) second weighing = 45.49g 5. Mass of Magnesium Chloride: { 4} – { 1 } = 0.41g 6. Mass of chlorine in Magnesium Chloride: { 5 } – { 3 }
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Unit 1- Lesson 2 Chemistry Key Questions 4. Name Formula Cobalt (II) Nitrate Co(NO3)2 Calcium Phosphate Ca 3 (PO 4) 2 Disphosphorus trioxide P203 Ammonium Sulfate (NH 4) 2 (SO 4) Gold (III) hydroxide AuH3O3 Platinum (II) Oxide PtO Gallium carbonate
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glittery |the sliver of magnesium. | | | | |(+) the liquid looks |(+) There was also a black |(+) The copper almost looks |(+) the balls of lead turned| |AgNO3 |ash-like and the Zinc turned|spot that appeared on the |like fuzz grew on it |black and look fuzzy and | | |black and looks like it is |magnesium. |
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