Why does the summer monsoon winds blows over the Arabian Sea from the South West?
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HII there
Aldehydes•Analdehydeis an organic compound containing a terminal carbonyl group. This functionalgroup, which consists of a carbon atom bonded to a hydrogen atom and double-bonded to anoxygen atom (chemical formula O=CH-), is called thealdehyde group.•The aldehyde group is also called theformylor methanoylgroup.•The wordaldehydeseems to have arisen fromal cohol dehyd rogenated .•The aldehyde group is polar. Oxygen, more electronegative than carbon , pulls the electrons inthe carbon-oxygen bond towards itself, creating an electron deficiency at the carbon atom.~PHYSICAL PROPERTIES~ •Hydrocarbons are essentially nonpolar and thus have low melting and boiling points. Themelting and boiling points of carbonyl-containing compounds are considerably higher.•Butane (CH3CH2CH2CH3), propanal (CH3CH2CHO), and acetone (CH3COCH3) all have thesame molecular weight (58), but the boiling point of the hydrocarbon butane is 0 °C (32 °F),while those of propanal and acetone are 49 °C (120 °F) and 56 °C (133 °F), respectively.•Formaldehyde (HCHO) is a gas under standard conditions, and acetaldehyde (CH3CHO) boils atabout room temperature.•Other aldehydes, except those of high molecular weight, are liquids under ordinary conditions.•Aldehydes with fewer than about five carbon atoms are soluble in water; however, above thisnumber, the hydrocarbon portion of their molecules makes them insoluble.~CLASSIFICATIO OF ALDEHYDES~ Aliphatic Aldehydes•A homologous series of organic compounds of carbon, hydrogen and oxygen•Formula: CnH2n + 2.CHO• Named by replacing “-e” at the end of the alkane from which they are derived with “-al”Methanal (Formaldehyde) Ethanal (Acetaldehyde)~ALDEHYDE NOMENCLATURE~ •In compounds which contain acarbonylgroup, the parent is the longest chain containing thecarbonyl carbon.•For analdehydethe parent alkane -> alkanal; the chain is numbered beginning with the carbonylcarbon as #1.•If the carbonyl carbon of an aldehyde is attached to a ring, the compound is a cycloalkanecarbaldehyde, and the carbon of the ring to which the aldehyde is attached is #1.•In other cases, such as when a -CHO group is attached to a ring, the suffix-carbaldehydemay beused. Thus, C6H11CHO is known ascyclohexanecarbaldehyde. If the presence of another functional group demands the use of a suffix, the aldehyde group is named with the prefix formyl-. This prefix is preferred tomethanoyl-.Aromatic Aldehydes•An aromatic compound containing the CHO radical•Have a benzene ring or phenyl ring connected to the aldehyde group
Aldehydes•Analdehydeis an organic compound containing a terminal carbonyl group. This functionalgroup, which consists of a carbon atom bonded to a hydrogen atom and double-bonded to anoxygen atom (chemical formula O=CH-), is called thealdehyde group.•The aldehyde group is also called theformylor methanoylgroup.•The wordaldehydeseems to have arisen fromal cohol dehyd rogenated .•The aldehyde group is polar. Oxygen, more electronegative than carbon , pulls the electrons inthe carbon-oxygen bond towards itself, creating an electron deficiency at the carbon atom.~PHYSICAL PROPERTIES~ •Hydrocarbons are essentially nonpolar and thus have low melting and boiling points. Themelting and boiling points of carbonyl-containing compounds are considerably higher.•Butane (CH3CH2CH2CH3), propanal (CH3CH2CHO), and acetone (CH3COCH3) all have thesame molecular weight (58), but the boiling point of the hydrocarbon butane is 0 °C (32 °F),while those of propanal and acetone are 49 °C (120 °F) and 56 °C (133 °F), respectively.•Formaldehyde (HCHO) is a gas under standard conditions, and acetaldehyde (CH3CHO) boils atabout room temperature.•Other aldehydes, except those of high molecular weight, are liquids under ordinary conditions.•Aldehydes with fewer than about five carbon atoms are soluble in water; however, above thisnumber, the hydrocarbon portion of their molecules makes them insoluble.~CLASSIFICATIO OF ALDEHYDES~ Aliphatic Aldehydes•A homologous series of organic compounds of carbon, hydrogen and oxygen•Formula: CnH2n + 2.CHO• Named by replacing “-e” at the end of the alkane from which they are derived with “-al”Methanal (Formaldehyde) Ethanal (Acetaldehyde)~ALDEHYDE NOMENCLATURE~ •In compounds which contain acarbonylgroup, the parent is the longest chain containing thecarbonyl carbon.•For analdehydethe parent alkane -> alkanal; the chain is numbered beginning with the carbonylcarbon as #1.•If the carbonyl carbon of an aldehyde is attached to a ring, the compound is a cycloalkanecarbaldehyde, and the carbon of the ring to which the aldehyde is attached is #1.•In other cases, such as when a -CHO group is attached to a ring, the suffix-carbaldehydemay beused. Thus, C6H11CHO is known ascyclohexanecarbaldehyde. If the presence of another functional group demands the use of a suffix, the aldehyde group is named with the prefix formyl-. This prefix is preferred tomethanoyl-.Aromatic Aldehydes•An aromatic compound containing the CHO radical•Have a benzene ring or phenyl ring connected to the aldehyde group
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Cool waters are most prominent near the Arabian Peninsula during the summer monsoon. During the summer monsoon, strong, steady winds push water on thesea surface toward land. In response to the intensified winds and resulting surface-water movement, cooler waters rise up from the ocean depths
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