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... (a) In areas affected by acid rain, statues and structures made of limestone (calcium carbonate) often show signs of considerable deterioration. (b) When table salt (NaCl) and sugar (C12H22O11) are dissolved in water, it is observed that (i) both solution have higher boiling points than pure water, ...
... (a) In areas affected by acid rain, statues and structures made of limestone (calcium carbonate) often show signs of considerable deterioration. (b) When table salt (NaCl) and sugar (C12H22O11) are dissolved in water, it is observed that (i) both solution have higher boiling points than pure water, ...
semester two final review key units 5 and 6 only
... Biochemistry: sometimes called biological chemistry, is the study of chemical processes within and relating to living organisms Hydrocarbon: are the simplest organic compounds. Containing only carbon and hydrogen, they can be straight-chain, branched chain or cyclic Carbohydrate: is a biological mol ...
... Biochemistry: sometimes called biological chemistry, is the study of chemical processes within and relating to living organisms Hydrocarbon: are the simplest organic compounds. Containing only carbon and hydrogen, they can be straight-chain, branched chain or cyclic Carbohydrate: is a biological mol ...
2016 - Specimen Paper 2 - Cambridge International Examinations
... What additional apparatus is required to identify the amino acids present in a mixture? ...
... What additional apparatus is required to identify the amino acids present in a mixture? ...
Acid K a
... Q < K: The rxn shifts right to produce products to increase Q. Q > K: The rxn shifts left to produce reactants to decrease Q. ...
... Q < K: The rxn shifts right to produce products to increase Q. Q > K: The rxn shifts left to produce reactants to decrease Q. ...
Diazotization-Coupling Reaction--
... Azote is an old word for nitrogen. Hence, the presence of azo in the name of a chemical implies that nitrogen is present in the structure. Therefore, diazo means two nitrogen atoms. When combined with onium, we have diazonium, which means two nitrogen atoms and a positive charge (i.e., N2+). Diazoni ...
... Azote is an old word for nitrogen. Hence, the presence of azo in the name of a chemical implies that nitrogen is present in the structure. Therefore, diazo means two nitrogen atoms. When combined with onium, we have diazonium, which means two nitrogen atoms and a positive charge (i.e., N2+). Diazoni ...
Chap. 4 - Chemical Reactions
... 2. Solid calcium reacts with oxygen gas. 3. Solutions of aluminum chloride & sodium carbonate are mixed. 4. Liquid magnesium bromide is decomposed at high temperature. 5. Solid nickel is reacted with aqueous magnesium sulfate. 6. Chlorine gas is reacted with aqueous potassium bromide. 7. Solid magne ...
... 2. Solid calcium reacts with oxygen gas. 3. Solutions of aluminum chloride & sodium carbonate are mixed. 4. Liquid magnesium bromide is decomposed at high temperature. 5. Solid nickel is reacted with aqueous magnesium sulfate. 6. Chlorine gas is reacted with aqueous potassium bromide. 7. Solid magne ...
The Representative Elements: Group 5A Through 8A
... Oxo-acids and Oxo-anions of Nitrogen Nitric acid (HNO3) and nitrous acid (HNO2) are the two common oxo-acids of nitrogen. Nitric acid is a strong acid and a very powerful oxidizing agent. It oxidizes almost all metals it comes in contact with, except gold and platinum. Unlike the reactions of metal ...
... Oxo-acids and Oxo-anions of Nitrogen Nitric acid (HNO3) and nitrous acid (HNO2) are the two common oxo-acids of nitrogen. Nitric acid is a strong acid and a very powerful oxidizing agent. It oxidizes almost all metals it comes in contact with, except gold and platinum. Unlike the reactions of metal ...
SATL-POC - Systematic Approach to Teaching
... Avoid skin contact with diazonium salts. Some diazonium salts are explosive when dry. Always use in solution. ...
... Avoid skin contact with diazonium salts. Some diazonium salts are explosive when dry. Always use in solution. ...
IGCSE Revision document
... How many Zinc and Oxygen atoms are on the left-hand side? Zn ______ 0_______ How many Zinc and Oxygen atoms are on the right-hand side? Zn ______ ...
... How many Zinc and Oxygen atoms are on the left-hand side? Zn ______ 0_______ How many Zinc and Oxygen atoms are on the right-hand side? Zn ______ ...
Acid rain
Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low pH). It can have harmful effects on plants, aquatic animals and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. Governments have made efforts since the 1970s to reduce the release of sulfur dioxide into the atmosphere with positive results. Nitrogen oxides can also be produced naturally by lightning strikes and sulfur dioxide is produced by volcanic eruptions. The chemicals in acid rain can cause paint to peel, corrosion of steel structures such as bridges, and erosion of stone statues.