How does acid precipitation affect marble and limestone buildings? Acid rain is a type of precipitation that is characterised by containing contaminating substances such as sulphuric and nitric acid‚ both of which have harmful effects on the environment. Both marble and limestone are extremely vulnerable to the damages done by acid rain due to their components. These materials contain calcite‚ a substance that easily reacts and dissolves with acid. Acid rain is the cause of the destruction of many
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One of the biggest concerns in healthcare today is cardiovascular disease. Affecting 36% of the US population alone‚ cardiovascular disease can lead to stroke‚ heart attack‚ and even death (22). Extensive research has been done investigating the causes of cardiovascular diseases. Lipids and lipoproteins have been implicated to be one of the largest factors contributing to cardiovascular disease. In order to reduce cardiovascular disease we must understand lipid metabolism. To understand lipid metabolism
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Histology and endocrinological function of the Juxtaglomerular apparatus Abbreviations used: DCT- Distal convoluted tubule‚ JGA-Juxtaglomerular apparatus‚ MD-Macula Densa‚ TGF-tubular glomerular feedback‚ NO-Nitric Oxide‚ NOS-Nitric Oxide Synthase The nephron‚ the functional unit of the kidney‚ is made of 2 parts: the renal corpuscle and the renal tubule. The renal corpuscle is composed of the glomerulus and Bowman’s capsule while the renal tubule extends from the Bowman’s capsule to the collecting
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ions. Compounds in which the H+ ions in an acid have been replaced by ammonium ions (NH4+) are called ammonium salts. NOTE: •An anion is a negatively charged ion. Hence:•Hydrochloric acid gives chlorides. E.g. sodium chloride‚ ammonium chloride. •Nitric acid gives nitrates. E.g. barium nitrate‚ copper nitrate. •Sulphuric acid gives sulphates. E.g. silver sulphate‚ iron (ii) sulphate. •Phosphoric acid gives phosphates. E.g. sodium phosphate‚ ammonium phosphate. •Each acid gives rise to a series of
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Herbalife: Ethical Issues Herbalife is a company selling herbal products for health and dietary purposes. In order to do this‚ the company recruits interested people to help them sell their products. The way in which ***** is done is however questioned for its apparent unethical nature. ***** aspects of the case‚ toge*****r with the ethical issues *****volved‚ are discussed below. Ethics Donaldson (127-128) provides three broad *****ories of ethics that can be applied to the situation ***** Herbalife
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Depletion of the Ozone Layer * Function and location of the Ozone Layer The ozone layer is a portion of earth’s atmosphere that contains high levels of ozone. Ozone (O3) is a triatomic molecule consisting of three oxygen atoms. It is an allotrope of oxygen. Ozone is formed when oxygen molecules after absorbing ultra violet photon then converts a single O2 into two atomic oxygen radicals. The atomic radicals then combine with separate O2 molecules to create two O3 molecules. The main function
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lower than 7 rain is considered acid. b) Which are the compounds that in contact with water origin acid rain? = Compounds like sulfur sulphuric and nitric acids. c) Which are the principal causes of these compounds? = The extra acidity in rain comes from the reaction of primary air pollutants‚ primarily sulphur oxides and nitrogen oxides‚ with water in the air to form strong acids. The main sources of these pollutants are industrial power-generating plants and vehicles. This means that this
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series of reactions starting with copper metal and nitric acid to form copper (II) nitrate. Then I reacted copper and several other solutions such as‚ sodium hydroxide‚ sulfuric acid‚ ammonium hydroxide‚ and hydrochloric acid to form precipitates. In conclusion my percent recovery of copper was 100% due to the adequate amounts of solutions and achievement of proper chemical reactions. Equipment and Materials: ← Copper Metal (penny) ← Nitric Acid (HNO3)(aq) ← Sodium Hydroxide (NaOH)(aq)
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changes it underwent. For the first step‚ we mixed nitric acid and copper powder‚ and noticed that a yellowish brown gas emerged‚ along with effervescence. The red solid disappeared and became a blue liquid. We know that we produced copper nitrate‚ nitrate gas‚ and water because the only two blue solutions in “A New Language” are copper sulfate and copper nitrate. It would make sense for us to have created copper nitrate‚ since we mixed copper with nitric acid‚ not sulfuric acid. The nitrate that we created
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Anderson Kuo Period 1 CHAPTER 19 – The Representative Elements: Groups 1A through 4A -19.1- A Survey of the Representative Elements I. Elements A. Representative Elements: Groups 1A through 8A ← Filling s and p orbitals ← First member of a group forms the strongest ( bonds; results in diatomic molecules B. Transition Elements: center of the table ← Filling d orbitals C. Lanthanides & Actinides: listed separately‚ on the bottom on the table ← Filling
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