"Hydrogen" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 24 of 50 - About 500 Essays
  • Good Essays

    Biology notes 7.2

    • 678 Words
    • 3 Pages

    molecule is said to be “polar”? -Because the molecule is a bit like a magnet with two poles. 1b. How do hydrogen bonds between water molecules occur? -The attraction between a hydrogen atom with a partially negative charge. 2b. Why is water such a good solvent? -Because water easily dissolves salts‚ sugars‚ minerals‚ gasses and even other solvents. 3b. The acid hydrogen fluoride can be dissolved in pure water. Will the pH of the solution be greater or less than 7? -The

    Free Atom Chemical bond Hydrogen

    • 678 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Hazards of Materials

    • 1831 Words
    • 8 Pages

    polychlorinated biphenyl‚ pyridine‚ 2‚4‚5-T‚ and parathion. PCB The first chemical to be effected by the fire is the PCB (polychlorinated biphenyl). This chemical is used as an electro conductor in the transformer and cools the transformer. PCB contains hydrogen‚ carbon and chlorine. This chemical can cause skin irritation and redness of skin in its original form if skin contact does occur. The LD50 for PCB is 8500 – 11‚900 ppm. Exposure to PCB can cause defatting and chlorance. Both of these are from

    Premium Oxygen Sulfuric acid Water

    • 1831 Words
    • 8 Pages
    Good Essays
  • Better Essays

    Objective ! Candidates will react Magnesium with Hydrochloric acid and collect Hydrogen. The grams of the produced Hydrogen will be calculated and compared to the theoretical yield of Hydrogen. ! Controlled Variables ! Mass of Magnesium Ribbon This will be kept constant as the objective is to determine the Gas Constant (R). If this is influenced‚ then the overall yield will be affected as the amount of hydrogen produced will be altered. The mass will be controlled using a Scale. Amount

    Premium Ideal gas law Pressure Chlorine

    • 1386 Words
    • 6 Pages
    Better Essays
  • Good Essays

    cfcf

    • 464 Words
    • 2 Pages

    the graphene sample to generate atomic hydrogen Inspired by the elegant idea to create graphane‚1there have been some efforts to decorate the graphene lattice with hydrogen atoms to transform it from a highly conductive zero-overlap semimetal into a nonzero gap semiconductor and thus tune its electric properties to suit wider practical applications.234 However‚ these attempts have been merely limited to cold hydrogen plasma treatment5 in which the hydrogen plasma bombardment also creates numerous

    Premium Hydrogen Catalysis

    • 464 Words
    • 2 Pages
    Good Essays
  • Better Essays

    War Poem

    • 6853 Words
    • 28 Pages

    The Earth’s atmosphere has changed over billions of years‚ but for the past 200 million years it has been much as it is today. We are‚ however‚ causing our atmosphere to change by human activity. Burning fossil fuels and deforestation are two examples of human effect on the environment. Composition of the Earth’s atmosphere The composition of air You need to know the proportions of the main gases in the atmosphere. The Earth’s atmosphere has remained much the same for the past 200 million years

    Free Carbon dioxide Oxygen Hydrogen

    • 6853 Words
    • 28 Pages
    Better Essays
  • Satisfactory Essays

    starts to dissolve and lets out the carbon dioxide gas. This is what makes the bubbles.Usually the tablet is used as a pain reliever and an antacid.the pain reliever is used in baking soda‚sodium bicarbonate.The pain reliever also includes sodium hydrogen carbonate

    Premium Chemical reaction Chemistry Hydrogen

    • 285 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Decomposition Reaction

    • 393 Words
    • 2 Pages

    CBSE TEST PAPER-03 CLASS - X (Chemical Reactions and equations) 1. Take about 5 ml of dil. HCl in a test tube and add a few pieces of fine granules to it. Which gas is evolved? (a) Chlorine (b) Hydrogen (c) HCl (d) Nitrogen 2. Dissolving suger is an example of(a) Physical change (b) Chemical change (c) Redox Reaction (d) None of these. 3. Heat is evolved diving (a) Endothermic Reaction (b) Displacement Reaction (c) Combustion Reaction (d) Combination Reaction 4. Which of the following is not a balanced

    Free Chemical reaction Hydrogen Nitrogen

    • 393 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    Describe the preparation and reactions of alkenes. 7. Propose mechanism on preparation; dehydration of alcohol 8. Define carbocation‚ electrophile and Markovnikov’s Rule. 9. Propose mechanism on reaction addition of cold sulphuric acid and Hydrogen halide Alkanes Nomenclature of Alkanes Sources & Importance of Alkanes A. Natural Gas  Consists of 90-95% methane with lesser amounts of ethane and other low-molecular-weight hydrocarbons. B. Petroleum  Liquid mixture of

    Premium Hydrogen Benzene Methane

    • 1698 Words
    • 7 Pages
    Powerful Essays
  • Better Essays

    Enthalpy Lab Report

    • 1248 Words
    • 5 Pages

    Abstract This lab is performed in order to determine the total energy in a reaction between zinc and hydrochloric acid. The reaction is done twice‚ once to measure the heat of the reaction and again to determine the work done in the system. This is because Enthalpy equals heat plus work (∆H= ∆E+W). Heat and work can be broken down further into separate components so the equation used in lab is ∆H=mc∆T + PV. Many calculations are used in the lab to find out what cannot be measured directly (ex:

    Premium Thermodynamics Energy Temperature

    • 1248 Words
    • 5 Pages
    Better Essays
  • Better Essays

    Decreasing Fossil Fuels

    • 1955 Words
    • 8 Pages

    Decreasing Fossil Fuels Over the past century America has continuously used its own fossil fuel resources and paid handsomely for additional supplies‚ in the race to stay current with modern technology and life .The possession of this resource has made the United States a very prosperous and powerful nation. The same fossil fuels that’s has made America such a powerhouse are the same that are damaging the environment and economy they have enabled. It is imperative that we decrease our dependency

    Premium Fossil fuel Fuel cell Carbon dioxide

    • 1955 Words
    • 8 Pages
    Better Essays
Page 1 21 22 23 24 25 26 27 28 50