AP Chemistry Period 1 Molecular Weight of a Condensable Vapor Lab Purpose: The purpose and objective of this lab was to find the molecular weight of a condensed vapor. Materials and Equipment: • Aluminum foil square (around 6cm on a side) • 125 mL flask • Barometer • 3 mL of unknown liquid • 200 mL graduated cylinder • 600 mL beaker • Pin • Balance (0.002g) • Bunsen Burner setup • Rubber band • Thermometer • Ceramic center wire gauze Procedure: 1. A 125 mL flask was obtained
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Directions Using the formula for dilutions‚ write the recipe to make 100 mL of a new solution of each solute based on having as much of the initial solution as you need. V1 M1 V2M2 SoluteFormula of SoluteInitial Concentration (M)Final Concentration (M)Recipe For 100 mL of New SolutionSodium hydroxideNaOH1.0 M0.27 M(1.0M)(VNaOH) (0.27 M)(100 mL) VNaOH 27 mL Dilute 27 mL of 1.0 M NaOH to 100 mL.Potassium permanganateKMnO41.0 M0.34 MDilute 34 mL of 1.0 M
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UNIT 4 Study Guide For BLOOD COLLECTION I. Capillary Blood Collection A. Assemble equipment. 1. Gauze or cotton balls. 2. Alcohol swabs‚ or 70% alcohol. 3. Sterile blood lancet. 4. Three capillary tubes (anticoagulated and plain). 5. Pencil and paper. (In hospital you would have a requisition slip). 6. Gloves. B. Select and prepare the site. 1. Massage the finger to increase circulation.
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EXPERIMENT ONE: ‘’The Scientific Method’’ Lab Report by Mitchell Eaton Biological Science Lab (BIOL 1001-029) February 24th‚ 2015 ABSTRACT: Purpose Statement: HYPOTHESES: Unknown Substance One: Unknown Substance Two: Unknown Substance Three: Unknown Substance Four: Unknown Substance Five: Unknown Substance Six: PROCEDURES: Materials Student Provides: Distilled Water 2 Clean Sheets of Paper 1 Paper Towel 1 Pair
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Envy TM Operation and adjustment instructions Q U I C K START 01 02 BARREL 03 BARREL BLOCKER Unpack the EnvyTM and its barrel. Screw the barrel into the front of the marker‚ hand tight. Take care not to strip the barrel threads or overtighten. Have your compressed air (HPA) or CO2 tank filled by a person who is properly trained to do so. If using an HPA system with an on/off valve‚ make sure it is in the OFF position. If using a CO2 tank or screw-in style preset HPA
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The Dehydration of a Bluestone February.28.2008 Purpose • To determine the value of X in CuSO4 • xH2O. Materials • Crucible • Blue Stone • Bunsen Burner • Bunsen Lighter • Test Tube • Water • Rheostat • Clay Triangle • Electronic Balance Procedure A clean crucible was taken and weighed on an electronic balance. The mass was then written down. 2g of bluestone was placed in the crucible and weighed. The mass of the blue solid was written down. The crucible was placed on a clay
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Bunsen Burner Erin Hillman August 30‚ 2010/5th period Biology Bunsen Burner Introduction: One of the most efficient ways to heat materials is by a Bunsen Burner. Bunsen Burners are made in a variety of different shapes and sizes. Hypothesis: In this lab my class learned the most efficient and safest way to use a Bunsen Burner. Materials: The materials used were; safety goggles‚ safety apron‚ ring stand‚ Bunsen Burner‚ flame striker‚ gas‚ wire gauze‚ a beaker‚ beaker tongs and
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Science Fair Checkpoint #3 Materials: Disposable Gloves Timer Test tubes Thermometer Steel Wool Scissors Ruler Lemon Juice Orange Juice Vinegar Distilled Water Four Small Bowls Thin Towel Tall plastic cup Graph Paper Procedure: Before beginning your experiment‚ make sure that the distilled water has been opened and exposed to the air for at least a few hours. This will allow it to absorb some carbon dioxide from the atmosphere and lower its pH from a level of about 7 to about
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1. Take 5 tea bags and record the weight on the 3decimal place balance. 2. Take a 500 ml beaker add 200 ml of 20°C distilled water to it. Now place 5 tea bags in this beaker. 3. Boil the content in a beaker‚ in a 40°C hot water bath for 5 minutes. 4. Pour the mixture into a new beaker. 5. Gently squeeze the tea bags (you can use a teaspoon to help when using high temperature of water) to make sure that all the water is in the beaker. 6. Cool the aqueous solution in an ice bath‚ use a thermometer
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Why does colour leak out of cooked beetroot? Introduction When cooking a beetroot you are recommended not to remove the outer skin and not to cut off the entire stalk if you do not want the red dye in the cooking water. Beetroot contains a red pigment called betalain‚ which is in the cell vacuole. Normally the betalain stays inside the cell‚ however when the cell is exposed to extreme temperatures they leak out. The reason why they leak out is because of the cell membrane structure. When the
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