Magnesium hydroxide

Decent Essays
Improved Essays
Superior Essays
Great Essays
Brilliant Essays
    Page 11 of 38 - About 377 Essays
  • Improved Essays

    Table 1, shows the exact chemicals used to prepare silica solution, zinc acetate solution and zinc nitrate solution. For the zinc acetate, adding 2-propanol to the hydrated zinc acetate will result in a white solution with some precipitations of zinc acetate in the bottom of the beaker, then by adding 2.1 grams of diethanolamine, ratio is 1:1, the solution will be transparent; due to the effect of diethanolamine which increases the pH of the solution, make it basic. Dissolving zinc nitrate in…

    • 255 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    Heptahydrate Lab Report

    • 454 Words
    • 2 Pages

    Materials and Procedure The materials that were used were the following: 4.268 grams of zinc sulfate heptahydrate, 2.586 grams of calcium acetate monohydrate, Analytical balance, 220 milliliters of deionized water, stir stick, two 100 milliliter glass beakers, one 250 milliliter glass beaker, filter paper, ring stand, glass funnel, and an Erlenmeyer flask. All of the materials listed above were obtained or taken into consideration before experimentation began. A piece of weight paper was…

    • 454 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    Melting Point Lab

    • 646 Words
    • 3 Pages

    Discussion The findings in this lab show that the melting point of Alum is 92.5 degrees Celsius. During the first trial a temperature of 91.0 degrees Celsius was recorded, but during the second trial a temperature of 93.0 degrees Celsius was found. Averaging the two temperatures gives a total around 92.0. The literature melting point of Alum is said to be 92.5 degrees Celsius and the data from similar studies, such as, Chemistry 103: Synthesis of Alum, together show that the results from the…

    • 646 Words
    • 3 Pages
    Improved Essays
  • Superior Essays

    The values calculated through experimentally extrapolated values compare to the the expected theoretical values of these heats with a degree of error. In most cases the values found through experiment were higher than the expected value by one or two kilojoules. This discrepancy causes a 2-5% error in the values calculated. The causes of this degree of error could be sources of errors due to the equipment and set up of the experiment. The experiment is not a perfectly isolated system which could…

    • 1013 Words
    • 5 Pages
    Superior Essays
  • Improved Essays

    Golf Ball Experiment

    • 2043 Words
    • 9 Pages

    The purpose of this lab was to identify the amount of salt needed in the water to “flink”, the point at which an object sinks or floats, the golf ball in a salt solution. Flinking occurs when the object is neither sinking or floating, it appears as if it is suspended in the middle of the solution. To flink an object, the object’s density has to have the same as the density of the solution that it is placed into. To achieve the same density of both the salt solution and golf ball, manipulation of…

    • 2043 Words
    • 9 Pages
    Improved Essays
  • Improved Essays

    compounds (Retrieved from Chemistry of Petrochemical Processes, 2nd Edition, 2001). C .Asphlathenes It is organometallic compounds and inorganic salts (metallic compounds). Mostly sodium, calcium, magnesium, aluminium, iron, vanadium, nickel are present either as inorganic salts, such as sodium and magnesium chlorides, or in the form of organometallic compounds, such as those of nickel and vanadium (as in porphyrins). It is harmful and corrosive and should be removed (Lewis and Sami, 1991). …

    • 1446 Words
    • 6 Pages
    Improved Essays
  • Improved Essays

    Leaf Disk Lab Report

    • 566 Words
    • 3 Pages

    Introduction: Leaf Disk float in water alone. When a solution consisting of a small amount of sodium bicarbonate is added to the water it causes the leaf disk to sink. As photosynthesis continues in the leaf disk it releases oxygen and causes the leaf disk to rise. While cellular respiration is occurring also the rate that the disk raise is an in implicit measurement of the net rate of photosynthesis. The independent variable in this lab is the solution and the light because it can be…

    • 566 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    The experiment began by weighing 2.0g of acetanilide into a round bottom flask and adding a stir bar. 20ml of glacial acetic acid was added to the flask and was covered with a watch glass. The solution was stirred until the acetanilide was dissolved. The flask was brought to the hood and 7.0g of pyridinium tribromide was added and then stirred for about 30 minutes with a watch glass as a cover. While stirring, 10% sodium bisulfite was added in 1ml increments until the orange/red color…

    • 286 Words
    • 2 Pages
    Decent Essays
  • Superior Essays

    2). HEROIN: Heroin is formed by conversion of morphine which does not require complex equipmentation but more elaborate chemical operation under which morphine is refluxed with acetic anhydride for about 5 hours results into the formation of Diacetyl morphine, i.e., heroin. It is seperated when the solution gets neutralize with sodium carbonate or washing soda in which heroin gets separated as a precipitate. It is collected and purified by treating it with hydrochloric acid by which Heroin…

    • 1658 Words
    • 7 Pages
    Superior Essays
  • Decent Essays

    1. Which analytical balance is the more accurate? Why? 2. Which piece of glassware is best at measuring the density of water? 3. What two aspects of the data set you cited in Question 1 define it as “best”? 4. What does “standard deviation” measure? 5. (a) Calculate the standard deviation of the data set you labeled as having the least random error in the first experiment with pure water. (b) Calculate the standard deviation of the data set you labeled as having the MOST random error in the…

    • 402 Words
    • 2 Pages
    Decent Essays
  • Page 1 8 9 10 11 12 13 14 15 38