acid rain Acid rain is rain or any other form of precipitation that is unusually acidic. It has harmful effects on plants‚ aquatic animals‚ and infrastructure. Acid rain is mostly caused by human emissions of sulfur and nitrogen compounds which react in the atmosphere to produce acids. In recent years‚ many governments have introduced laws to reduce these emissions. Emissions from volcanoes and those from biological processes that occur on the land‚ in wetlands‚ and in the oceans account for the
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The industrial separation process that I have decided to do is gold separation. Gold separation can be done in a number of ways but there is not always one way to do it‚ but the combination of a couple of these processes to extract pure gold. Gold is obtained form the lithosphere. It is separated from the ore found in the lithosphere. Gold’s symbol is Au. Its atomic number is 79 and has an atomic mass of 196.96655 amu. Its melting point is 1064.43°C‚ while its boiling point is 2807.0 °C. It is
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CHEMICAL REACTIONS OF COPPER AND PERCENT YIELD Objective To gain familiarity with basic laboratory procedures‚ some chemistry of a typical transition element‚ and the concept of percent yield. Apparatus and Chemicals |0.5 g piece of no. 16 or no. 18 copper wire |evaporating dish | |250 mL beaker (2) |weighing paper | |concentrated HNO3 (4 – 6 mL)
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Persuasive Message Antonio Lewis COMM/295 November 18‚ 204 James Eyster Persuasive Message Part 1 Persuasive Message to Boss 1. Create the message for boss Dear Boss‚ From: Antonio I have an amazing new product that I cannot wait for you to see. It is the new trial product that puts everything that is on a smartphone to your wrist. This new item will be called an IWatch. There will be three different styles to make. One of them being a sporty look; this one will be for our customers that are on
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Previously‚ Yeoh‚ & Wong (1993) reported the nutritional values of A. gangetica. Ogle et al.‚ 2001 reported the folate composition of A. gangetica. However‚ not much information on the utility of this leafy vegetable has been reported. To the best of our knowledge‚ there is no report on the optimization of polyphenols and their radical scavenging activities from the edible leaves of A. gangetica. Therefore‚ the main aim of this study is to optimize extraction conditions such as EtOH concentration
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vertical arrow indicates that gas is released. This reaction is very slow‚ due to passivation‚ so to speed it up‚ iron and salt are added. Passivation is the process by which a material is made less reactive‚ usually by the deposition of a layer of oxide on its surface: if you place a strip of magnesium into cold water‚ its surface will oxidise to magnesium hydroxide (Mg(OH)2)‚ and this coating will prevent further reaction. Therefore‚ in the heater meal‚ iron is added to the magnesium‚ leading to
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Objective: The objective of this lab is to determine and analyze the many chemical qualities of copper ‚ by using many solutions that enable copper to undergo chemical changes that will take copper from a metal back to its original state. This is done using cooper‚ Concentrated HNO3‚ 6 M NaOH ‚ Bunsen burner‚ 6 M H2SO4‚ Mg ribbon‚ and two test tubes. The techniques used in this lab which is cleaning glassware‚ disposing of chemicals ‚ measuring mass ‚ centrifugation ‚ venting gases‚ and test tube
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able to dissolve some kinds of rocks‚ like feldspar and limestone‚ in a process called carbonation. Many caves begin forming during the process of carbonation. On the other hand‚ any mineral that reacts with oxygen in the atmosphere will produce an oxide. Therefore‚ when an object made of iron is left exposed to the atmosphere it will oxidize and rust will form on the surface. Oxidation produces a reddish-brownish colour. 2. Draw & label a diagram to show how plants and animals break down
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Review of Related Literature Chalk is a type of limestone. Air and water do not wear chalk away easily‚ so when chalk is next to the sea‚ it often makes a largecliff. The "White Cliffs of Dover" in Kent‚ England are a good example of this. When chalk is near the top of the ground‚ it often makes chalk hills. Chalk holds water‚ so these chalk hills have a lot of water in them‚ and when the weather is very dry‚ water comes slowly from the chalk. Chalk is mostly formed from the calcareous (CaCO3)
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hydroxide (d) (e) iron (II) hydroxide none of these d 3. From the following ionic compounds‚ choose the name-formula pair that is not correctly matched. (a) (b) (c) (d) (e) sodium sulfide ammonium nitrate zinc hydroxide sodium sulfate calcium oxide Na2S NH4NO3 Zn(OH)2 Na2SO3 CaO b 4. How many atoms of hydrogen are in 1.00 mole of water? (a) (b) (c) 6.02 x 1023 atoms 1.20 x 1024 atoms 1.81 x 1024 atoms (d) ( e) 2.41 x 1024 atoms 3.01 x 1023 atoms a 5. How many atoms of carbon are present
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