"Lab 19a chemistry" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 11 of 50 - About 500 Essays
  • Powerful Essays

    4/2/14 Period: 1st Chemistry Sour Acids and Bitter Bases Purpose: The purpose of this lab was to observe the different reactions formed between various acids and bases with the aid of indicators. Equipment: 1. Safety goggles. 2. Droppers. 3. Red Litmus paper. 4. Blue Litmus paper. 5. pH paper. 6. Well plate. 7. Micro spatula. Materials: 1. Zinc. 2. Magnesium. 3. Iron. 4. Copper. 5. HCL. 6. HC₂H₃O₂. 7. NaOH. 8. Phenolphthalein. Procedure: Part A: 1. Add five drops

    Premium Base Acid Acid dissociation constant

    • 889 Words
    • 4 Pages
    Powerful Essays
  • Satisfactory Essays

    Chemistry Lab 1 4U

    • 542 Words
    • 5 Pages

    Purpose: The purpose of this experiment is to observe the colours produced when the solutions of metal ions are heated to high temperatures‚ then to explain the results in terms of the energy levels of the metal ions. Lastly‚ to use the flame colours to identify a series of unknowns. Hypothesis: Substance being tested Predicted flame colour NaCl(s) Yellow NaCl Red-Orange NaNO3 Dark Orange LiNO3 Red Sr(NO3)2 Dark Red KNO3 Blue-Indigo Ba(NO3)2 Yellow-Green Cu(NO3)2 Green Ca(NO3)2

    Premium Color Potassium Solid

    • 542 Words
    • 5 Pages
    Satisfactory Essays
  • Good Essays

    Chemistry week 3 lab

    • 707 Words
    • 3 Pages

    Laboratory 3: Molarity Of Saline Solution Data: Please write your observations about the appearance of the solution. 1. Normal Saline- The solution appeared clear at the start with slight particles showing‚ once adding the salt it still appeared clear. 2. Nasal Irrigation Saline- Solution appeared cloudy once adding the salt and baking soda‚ then it turned semi-clear about 30 secs later; it was more concentrated than the normal saline. Results: 1. Determine the molar mass of NaCl. Show the workup

    Premium Intravenous therapy Concentration

    • 707 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Determining the Concentration of an Unknown Solution Graph: The effect of concentration of CuS04 * 5H20 on transmittance. I solved for my unknown by plugging in “y” as my given transmittance value‚ which was 85.0. y = -278x + 100.12 .85 = -278x + 100.12 -99.27 = -278x X = .357M (concentration) The relationship between the transmittance values and the concentration is an indirect relationship. Whenever the concentration increases‚ the transmittance decreases. It can also be reversed

    Premium Analytic geometry Derivative Variable

    • 304 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Title of the Experiment: determination of densities Introduction The density of a sample of matter represents the mass contained within a unit volume of space in the sample. For most samples‚ a unit volume means 1.0 ml. The units of density‚ therefore‚ are quoted in terms of grams per milliliter (g/ml) or grams per cubic centimeter (g/cm3) for most solid and liquid samples of matter. Density is often used as a point of identification in the determination of an unknown substance. The density

    Premium Density Volume Temperature

    • 1139 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Chemistry Lab Report 2

    • 1504 Words
    • 7 Pages

    Menbere Wendimu Che101 Laboratory Report Acid Base Laboratory Objective: Introduction: Experimental: 2.04 g of KHP‚ 100ml volumetric flask‚ distilled H2O‚ approximately 0.1 M of NaOH‚ Vinegar‚ Phenolphthalein‚ 250ml Erlenmeyer flask‚ weighing balance‚ Graduating Cylinder‚ burette and pH meter were used in our experiment. In our first part of our experiment to prepare a primary standard‚ 0.1 M solution of KHP‚ we carefully weighed out 2.04g of KHP in a weigh paper using the weighing balance

    Premium Acid dissociation constant Acetic acid Titration

    • 1504 Words
    • 7 Pages
    Good Essays
  • Good Essays

    Discussion: The experiment lacked a proper control - While the experiment could not answer the research question‚ this does not disprove the possibility for the choice of bread to affect blood glucose levels; the obtained results were simply not sufficient to prove a connection. This might be due to several reasons‚ but as the experiment lacked a control subject which the other values could have been compared to‚ the results are completely unusable. However‚ there is no consistency in the results

    Premium Scientific method Psychology Research

    • 1084 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Ib Chemistry Lab Sl

    • 2298 Words
    • 10 Pages

    Investigation 4.2: Factors Affecting Viscosity Question How does changing the temperature (°C) of glycerin affect the viscosity s -1 of glycerin (l)‚ when tested by dropping a marble from a constant height into the glycerin (l) and timed with a stopwatch until the marble hits the bottom? Design Independent Variable: The independent variable of this experiment is the temperature (°C) of the glycerin (l). Dependent Variable: The dependent variable of this experiment is the viscosity s -1 of the glycerin

    Premium Glycerol Viscosity Liquid

    • 2298 Words
    • 10 Pages
    Good Essays
  • Good Essays

    Unit 10 Chemistry Lab

    • 837 Words
    • 4 Pages

    Sample Questions 1. In the chemical formula for ammonia‚ NH3‚ what does the subscript 3 represent? (a) the number of ammonia molecules that will bond together (b) the number of nitrogen atoms in each molecule of ammonia (c) the number of nitrogen and hydrogen atoms in each molecule of ammonia (d) The number of hydrogen atoms in each molecule of ammonia 2. The diagram above shows a block from the periodic table. The number six represents the following consumers eats only producers? (a) atomic

    Premium Chemistry Oxygen Hydrogen

    • 837 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Organic Chemistry Ir Lab

    • 511 Words
    • 3 Pages

    Infrared Spectroscopy Aim: To obtain IR spectra of know solid sample and liquid sample using the following sample preparing technique: Prepare solid IR sample using Solid Pellet Samplin Technique Use IR is used to identify functional groups. 5 major functional groups easily identified by IR spectroscopy: 1. C=O 2. C–O 3. OH 4. Phenols 5. C–H Instrument details Type of spectrophotometer: Nicolet 380 FT-IR spectroscopy‚ Nicolet Avatar 360 & Thermo Scientific iS10 FT-IR Spectrometer

    Premium Infrared spectroscopy Infrared Spectroscopy

    • 511 Words
    • 3 Pages
    Satisfactory Essays
Page 1 8 9 10 11 12 13 14 15 50