Emilia Monroe August 27‚ 2014 Experiment #01 The Determination of the Percent of Water in a Compound CHEM 1315-022 For experiment one‚ The Determination of the Percent of Water in a Compound‚ the sole purpose of conducting this experiment was to determine the percent of water found in compounds such as Magnesium Sulfate‚ Copper Sulfate‚ and so on. Along with determining the percentages of the hygroscopic compounds the experiment allowed for the exploration of separation of hydrogen bonds
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Ellie Rich Unit 3 – Health‚ Safety & Security in Health & Social Care P3 – Carry out a risk assessment in a health and social care setting I will be carrying out a risk assessment to ensure it is safe for a child aged 7 with down syndrome to be taken to a outdoor local playpark by a careworker for a bit of fun. The young person may be vulnerable as they are only 7 years of age and have Down syndrome which can affect their sense of awareness. The purpose of a risk assessment is to review the potential
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that there was sugar in the content because if the indicator shows any color other than blue‚ that means that the substance being tested has sugar presence contained in it. While performing the lab‚ my group and I were required to wear safety goggles throughout part I and segments of part II. This is because we are working with indicators that can stain burn through skin‚
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Assistant section. This experiment will create a reaction of sodium carbonate and calcium chloride dihydrate to produce a precipitate of calcium carbonate. This formula is: Na2CO3(aq) + CaCl2. 2H2O(aq) à CaCO3(s) + 2NaCl(aq) + 2H2O 1. Put on your goggles. 2. Weigh out 1.0 g of CaCl2·2H2O and put it into the 100-mL beaker. Add 25 mL of distilled water and stir to form the calcium chloride solution. Use only distilled water since tap water may have impurities that interfere with the experiment.
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metric ruler‚ tall jar‚ acetone‚ tiny test tube‚ small brown bottle‚ petroleum ether‚ plant leaf‚ dried parsley flakes‚ water‚ glass petri dish‚ stapler‚ sand‚ spatula‚ pipette‚ capillary tube‚ Whatman filter paper‚ a 50 ml chromatography solvent‚ and goggles (to be worn at all times). The steps to performing the experiment were: 1. Pour 50 ml of chromatography solvent into the tall jar and cover it with half of the petri dish. 2. Take ½ teaspoon of dried parsley flakes and ¼ teaspoon of sand in the
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have the right protective gear. You will want to purchase thick construction gloves to protect your fingers from sharp concrete edges and from any potential injuries you could sustain using the tools to cut the concrete with. You’ll want to wear goggles‚ not glasses‚ so that your eyes are completely protected from flying dust and chips of concrete. Breaking up concrete can also get really loud‚ so make sure some earplugs to protect your inner ear. Breaking up concrete can also create a lot of dust
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with hydrochloric acid to form zinc ions in a single replacement reaction. The acid reacts with the zinc but not copper. The reaction of zinc metal with the hydrochloric acid (HCl) produces zinc chloride and hydrogen gas. Safety: Wear your safety goggles and apron If you spill Hydrochloric acid on yourself‚ rinse with water Procedure: DAY I 1. Take a post-1983 penny and‚ using a triangular file‚ etch an “X” on one side of the penny. Also etch a notch on the edge of the penny in the four positions
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variable: weight/characteristics of building materials." Constant: amount of vinegar poured (50 ml)‚ amount of time the building material sat in the vinegar‚ amount of time material dried for Materials: •containers with lids •vinegar •safety goggles •marble chips •pea stone •graduated cylinders •pH paper •limestone chips •red sandstone chips •triple beam balance Procedure: 1: Gather all materials 2: Measure mass of marble 3: Place material in container 4: Fill graduated cylinder
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(hypotonic). Materials: - 2 small white potatoes - 4 150 ml styrofoam cups -balance -30 ml distilled water -30 ml each of a 5%‚ 3% and 1% salt solutions -Single-edge razor blade -Toothpicks -masking tape Procedure: 1. Make sure goggles are on. 2. Take two small white potatoes and use a single-edged razor to cut them into eight 1.5cm cube pieces. 3. Label the first cup 5% salt solution and add 30ml of the 5% salt solution. 4. Label the second cup 3% salt solution and add 30ml
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Specific Heat of a Metal Post-Lab I. Purpose The purpose of this lab is to determine the specific heat of an unknown metal. II. Safety Wear goggles and lab apron at all times. Use caution when boiling water. Do not pick up hot beaker or hot metal with hands. Use tongs. III. Pre-Lab Questions 1. A 12.5 g metal is raised to 100C in boiling water. It is put into 82.8 g of water at 22.4C‚ and the water rises to 28.6C. Recalling that the specific heat of water is 4.18J/gC‚ use the equation above
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