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An ester is a compound formed from an acid and an alcohol . In esters of carboxylic acids , the -COOH group and the -OH group lose a water and become a -COO- linkage:

R-COOH + R'-OH = R-COO-R' + H2O

where R and R' represent organic groups.

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ส่วนหนึ่งของคำพูด: noun
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อุตสาหกรรม/ขอบเขต: Chemistry
Category: General chemistry
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Beverages; Beer

Volatile flavor compounds naturally created during fermentation that add fruity, flowery and/or spicy flavors to beer.

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Chemistry; Organic chemistry

RCOOR_ A fatty acid in which the alkyl group (R_) of a monohydric alcohol replaces the active hydrogen; for example, RCOOCH 3 from reaction of RCOOH with methane.

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Chemistry; Organic chemistry

A compound containing two ester groupings.

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Chemistry; Organic chemistry

Hydrophobic silica powder, an ester of -SiOH with a monohydric alcohol; used as a filler in silicone rubbers, plastics, and printing inks.

олефин

Chemistry; General chemistry

A compound that consists of only carbon and hydrogen, that contains at least one carbon-carbon double bond. Alkene names end with -ene. Examples are ethylene (CH2=CH2); 1-propene ...

майшыт

Chemistry; General chemistry

A colloid formed from tiny liquid droplets suspended in another, immiscible liquid. Milk is an example of an emulsion.

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Chemistry; General chemistry

An elementary particle produced by certain nuclear decay processes. Neutrinos have no charge and extremely small masses compared to other subatomic particles.

қос жылу

Chemistry; General chemistry

A device that senses temperature changes by using a pair of joined wires made of dissimilar metals that produces a voltage that changes with temperature.

калориметр

Chemistry; General chemistry

An insulated vessel for measuring the amount of heat absorbed or released by a chemical or physical change.

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Chemistry; General chemistry

1. An -OH group within a molecule. 2. A free radical formed by abstraction of a hydrogen atom from water.

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อุตสาหกรรม/ขอบเขต: Religion Category: Catholic church

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A meeting of bishops of an ecclesiastical province or patriarchate (or even from the whole world, e. G. , Synod of Bishops) to discuss the doctrinal ...