an extreme archaebacteria which thrives in acids‚ sulfur rich‚ high temperature environments. Thermoacidophiles prefer temperatures of 70 - 80 C and pH between 2 and 3. They live mostly in hot springs and/or within deep ocean vent communities. Classified as an Archaebacteria and an extremophile‚ Thermoacidophiles are found in places where most organisms would not survive. Thermoacidophiles love heat and acidic watery environments‚ live in sulfur hot springs. As a result of living in such environments
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AQA GCSE Chemistry Unit 1 C 1: Fundamental ideas: C 1.1. Atoms‚ elements and compounds: * All substances are made up of atoms. * Elements contain only one atom. * Compounds contain more than one atom. * An atom has a tiny nucleus in its centre‚ surrounded by electrons. C 1.2. Atomic structure: * Atoms are made up of protons‚ neutrons and electrons. * Protons and electrons have equal and opposite electrical charges. Protons are positively charged‚ and electrons are negatively
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Cl־ (aq) Nitric: HNO3 (l) + H2O (l) H3O+ (aq) + NO3- Sulfuric: H2SO4 (l) + 2H2O (l) 2H3O+ (aq) + SO42־ Ethanoic: CH3COOH (s) + H2O (l) H3O+ (aq) + CH3COO־ (aq) Sources of sulfur and nitrogen oxides in the atmosphere: Sulfur Oxides: Organic decomposition: 2H2S (g) + 3O2 (g) 2SO2 (g) + 2H2O (l) Burning high-sulfur coals: S (s) + O2 (g) SO2 (g) Smelting metal sulfides: 2PbS (s) + 3O2 (g) 2PbO (s) + 2SO2 Nitrogen Oxides: Lightning: N2 (g) + O2 (g) 2NO (g) Oxidation of nitrogen monoxide:
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natural or man-made. Pollutants can be classified as either primary or secondary. Usually‚ primary pollutants are substances directly emitted from a process‚ such as ash from a volcanic eruption‚ the carbon monoxide gas from a motor vehicle exhaust or sulfur dioxide released from factories. Secondary pollutants are not emitted directly. Rather‚ they form in the air when primary pollutants react or interact. An important example of a secondary pollutant is ground level ozone — one of the many secondary
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showing a reaction. In order to respect the law of conservation of mass which states that mass is neither created nor destroyed. In order to observe this law equations must be balanced using coefficients. For example the reaction of Sulfur and Oxygen yields Sulfur Dioxide. Shown quantitatively as [pic]. Materials and Procedure In Part 1 of the lab the tongs were used to heat a strip of copper foil in the Bunsen burner. The copper was allowed time to cool and the spatula was used to scrape
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survival in his quest along the Yukon travel‚ the man’s pride and egotism causes him to ignore the warning signs‚ which soon brings severe consequences to his short-lived journey. In‚ “To Build a Fire”‚ London describes how the old timer from Sulfur Creek warns the man about how cold it gets in the country. The man’s response clearly demonstrates his arrogance by laughing at the old timer. The old timer is giving the man a significant warning sign about the cold‚ but the man’s pride gets
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1. Introduction The Jominy end-quench test is a technique that has the ability to harden the steel by quenching. It is an essential feature of materials that determine the material’s selection for particular applications. The different types of steels and alloys that are used for hardening in an industry are done by this test and considering that this test is a standardised experiment [1]. 1.1 Aim The specimens that are used in this test are normalized in accordance with the standards. The purpose
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O 29. 30. 31. 32. 33. 34. 35. 36. 37. b. Group 1A; 1 valence electron c. Group 5A; 5 valence electrons d. Group 2A; 2 valence electrons e. Group 7A; 7 valence electrons f. Group 4A; 4 valence electrons a. Cl b. S c. Al d. Li by gaining or losing electrons a. 2 b. 3 c. 1 d. 2 a. Al3+ b. Li+ c. Ba2+ d. K+ e. Ca2+ c. Sr2+ Most nonmetals gain 1‚ 2‚ or 3 electrons to achieve a noble-gas electron configuration. a. 3 b. 2 c. 1 d. 3 a. S2– b. Na+ c. F– d. P3– a
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they may be natural or man-made.[2] Pollutants can be classified as primary or secondary. Usually‚ primary pollutants are directly emitted from a process‚ such as ash from a volcanic eruption‚ the carbon monoxide gas from a motor vehicle exhaust or sulfur dioxide released from factories. Secondary pollutants are not emitted directly. Rather‚ they form in the air when primary pollutants react or interact. An important example of a secondary pollutant is ground level ozone — one of the many secondary
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9g-11.7g = 3.2g (mass of hydrate) ; 14.9g-14.53g = .37g (mass of anhydrous) Percentage of water: .373.2 x 100= 11.56% HW: #1-3: On loose leaf‚ determine the empirical formula 1) 32.4% sodium; 22.5% sulfur; 45.1% oxygen ------------------------------------------------- 2) 25.3% copper; 12.9% sulfur; 25.7% oxygen; 36.1% water I. Chemical Formula a. Empirical formula i. the simplest ratio of the atoms present in a molecule or compound ii. lowest number of atoms in a
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