кислород и еден атом од друг хемиски елемент во својата формула. An oxide /ˈɒksaɪd/ is a chemical compound that contains at least one oxygenatom and one other element[1] in its chemical formula. Metal oxides typically contain an anion of oxygen in the oxidation state of −2. Most of the Earth’s crustconsists of solid oxides‚ the result of elements being oxidized by the oxygen in air or in water. Hydrocarbon combustion affords the two principal carbon oxides:carbon monoxide and carbon dioxide. Even materials
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Charles Darwin; the creator and innovator of the theory of evolution deemed the application of human skills of creating of fire the second powerful accomplishment of humankind (Falk‚2012). During the Ice Age‚ Hominidae first learned of natural fires caused by lightnings and used it to their advantage. Our ancestors capability to start a fire help them survived in the extreme weather during the Ice Age (Ancient History‚2010). The Earth’s temperature during the Ice Age was about -11.1 degrees Celsius
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Δ(Product) Δ(Time) http://www.one-school.net/notes.html Rate of Reaction = 1 Δ(Product) Δ(Time) ONE-SCHOOL.NET Chemical Reaction Precipitation of Sulphur 2HCl(aq) + Na2S2O3(aq) ⎯→ 2NaCl(aq) + S(s) + SO2(g) + H2O(l) Na2S2O3: Sodium thiosulphate Notes: 1. Yellow precipitate (sulphur) is formed. 2. The reaction is slow. Potassium Dichromate (VI) with Ethanedioic Acid Cr2O72- + 14H+ + 3C2O42- ⎯→ 6CO2 + 7H2O + 2Cr3+ Notes: 1. In the reaction‚ the orange colour of the
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which the acceptance of an electron (reduction) by a material is matched with the donation of an electron (oxidation). A large number of the reactions already mentioned in the Reactions chapter are redox reactions. Synthesis reactions are also redox reactions if there is an exchange of electrons to make an ionic bond. If chlorine gas is added to sodium metal to make sodium chloride‚ the sodium has donated an electron and the chlorine has accepted an electron to become a chloride ion or an attached
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Coccidioides immitis Coccidioides immitis is a member of the Kingdom‚ Fungi; Phylum‚ Ascomycota; Class‚ Euascomycetes; Order‚ Onygenales; Family Onygenaceae; and the Genus Coccidioides. Coccidioides immitis are thermally dimorphic fungus that reproduces by arhroconidia‚ swelling of arhroconidia in vivo into spherules (which burst and release endospores.) The fungi is found mainly in warm dry areas with low rain fall‚ high summer temperatures‚ and low altitude. C. immitis is geographically limited
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n this lab‚ everyone got a flask which we then drew a pumpkin face on. Then we mixed 42 mL sodium hydroxide solution‚ 10 g of glucose‚ 1 mL‚ 1 L of water and Methylene blue solution and leave it undisturbed. The blue solution turned clear and when we added the yellow food coloring it turned an orange color. The solution then turned dark blue once the solution was shaken vigorously. This reaction occurred because the oxygen oxidized the methylene blue.In the oxidized state the methylene blue shows
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begin to deteriorate‚ after a long time exposure to oxygen within its surroundings. Governments spend millions of dollars in budget every year in restoring rusted materials caused by corrosion. Corrosion can take place in many forms as a result of oxidation and rust. Almost any material that comes in contact with oxygen will become at risk of corrosion. Corrosion in metals Metal atoms give up electrons and became positively charged ions when exposed to an environment containing water (H2O or air
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------------------------------------------------- Hydrochloric acid From Wikipedia‚ the free encyclopedia (Redirected from Muriatic acid) Not to be confused with hydrogen chloride. Hydrochloric acid | | | | Other names[hide] * Muriatic acid[1] * Spirits of salt[2] | Identifiers | CAS number | 7647-01-0 | ChemSpider | 10633809 | UNII | QTT17582CB | EC number | 231-595-7 | ChEMBL | CHEMBL1231821 | ATC code | A09AB03‚B05XA13 | Properties | Appearance | Colourless
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Amines are aliphatic and aromatic derivatives of ammonia. Amines‚ like ammonia‚ are weak bases (Kb = 10−4 to 10−6). This basicity is due to the unshared electron pair on the nitrogen atom. Classification and nomenclature of amines Amines are classified as primary‚ secondary‚ or tertiary based upon the number of carbon-containing groups that are attached to the nitrogen atom. Those amine compounds that have only one group attached to the nitrogen atom are primary‚ while those with two or three
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Mechanisms of Acetaminophen-lnduced Liver Necrosis By Jack A. Hinson‚ Dean W. Roberts‚ and Laura P. James Acetaminophen (paracetamol‚ N-acetyl-p-aminophenol; APAP) is widely used as analgesic and antipyretic drug. At therapeutic doses‚ acetaminophen is safe to be used. Acetaminophen other than aspirin and ibuprofen has only weak anti-inflammatory properties. At higher doses‚ acetaminophen produces a centrilobular hepatic necrosis that can be fatal. Acetaminophen-lnduced Hepatotoxicity Observation/
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