Introduction This experiment was designed to discover the how paper and other materials burned. The research question is: “What added material makes paper burn fastest?” My hypothesis was that gasoline would burn up the fastest. The experiment includes soaking toilet paper squares in various materials and burning them to see which burns the best. Research Paper itself burns well‚ that is a common known fact. Gasoline‚ rubbing alcohol‚ and petroleum jelly also are widely known as highly flammable
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Back Titrations Question 1 A 10.0 g piece of rusty steel wool is dissolved in 200.00 ml of 1.00 M sulfuric acid. The excess sulfuric acid is determined by titration with a 0.500 M sodium hydroxide solution. 300.00 mL of sodium hydroxide is required to neutralise the acid. What was the % purity of iron in steel wool? Question 2 A 3.145 g sample of a certain lead ore containing lead(II) carbonate‚ PbCO3‚ was heated gently with 25.00 mL of nitric acid of concentration
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depends upon the action or inaction of its citizens at this very moment to lessen their carbon dioxide emissions. These emissions act as an insulator
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and one attribute (quality) is the class.Theattributes considered are: 1 - fixed acidity‚ numeric 2 - volatile acidity‚ numeric 3 - citric acid‚ numeric 4 - residual sugar‚ numeric 5 – chlorides‚ numeric 6 - free sulfur dioxide‚ numeric 7 - total sulfur dioxide‚ numeric 8 – density‚ numeric 9 – pH‚ numeric 10 – sulphates‚ numeric 11 – alcohol‚ numeric 12 – R/W‚ nominal – R= red‚ W = white Class: quality (score between 0 and 10) Software used - WEKA 3.6.9 A data set
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1. Indicators were identified with the observation that the colour of some flowers depend on soil composition Classify common substances as acidic‚ basic or neutral * An acid is a substance which in solution produces hydrogen ions‚ H+ or more strictly H3O+‚ sometimes called hydronium ions * A base is a substance which either contains the oxide O2- or hydroxide ion OH- or which in solution produces the hydroxide ion. * A soluble base is called an alkali Common properties of all acids:
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removing metabolic wastes‚ including carbon dioxide and nitrogenous waste‚ from the body. The are many substances that need to be excreted - almost any cell product that is formed in excess by the chemical process occurring in the cells must be excreted. However there are two products that are produced in very large amounts. Carbon dioxide from respiration. Nitrogen containing compounds such as urea. Where are these substances produced. Carbon dioxide is produced by every living cell in the
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Merriam-Webster Dictionary‚ pollution is defined as " the action of the process of making land‚ water‚ air‚ etc. dirty and not safe or suitable to use." Meaning air pollution can be defined as the means of introducing hazardous materials such as carbon dioxide into the air. Society as a whole should educate themselves about three major causes of air pollution‚ car pollution‚ industrial pollution and pollution from natural causes such as forest fires and volcanic eruptions. Society should do this so they
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United States because of air pollution. Anthropogenic pollution is most prevalent in urbanized regions‚ which include North America‚ Asia‚ and Europe. Some of the specific types of anthropogenic pollutants are carbon monoxide‚ nitrogen oxide‚ sulfur dioxide‚ volatile organic compounds‚ and particulate matter. Carbon monoxide is very harmful to the environment. It is made by the incomplete combustion of fuels or other carbon-containing substances. Different types of transportation make Ten percent
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The powder absorbs moisture from the soil‚ allowing the colour of the indicator to be clearly seen. • 2. ACIDS IN THE ATMOSPHERE Identify natural and industrial sources of sulfur dioxide and oxides of nitrogen. Oxides of nitrogen are: Nitrous oxide (N2O)‚ Nitric oxide (NO) and Nitrogen dioxide (NO2) SULFUR DIOXIDE Natural sources: Volcanoes‚ geothermal hot springs Industrial sources: Combustion
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Institute World’s Worst Polluted Places report.[1] Pollutants[edit] Main articles: Pollutant and Greenhouse gas Before flue-gas desulfurization was installed‚ the emissions from this power plant in New Mexico contained excessive amounts of sulfur dioxide. Schematic drawing‚ causes and effects of air pollution: (1) greenhouse effect‚ (2) particulate contamination‚ (3) increased UV radiation‚ (4) acid rain‚ (5) increased ground level ozone concentration‚ (6) increased levels of nitrogen oxides
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