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[1] [5] These assumptions were: All functional groups on a branch unit are equally reactive; All reactions occur between A and B; There are no intramolecular reactions; As a result of these assumptions, a conversion slightly higher than that predicted by the Flory–Stockmayer Theory is commonly needed to actually create a polymer gel.
Conversion and its related terms yield and selectivity are important terms in chemical reaction engineering.They are described as ratios of how much of a reactant has reacted (X — conversion, normally between zero and one), how much of a desired product was formed (Y — yield, normally also between zero and one) and how much desired product was formed in ratio to the undesired product(s) (S ...
The simplest case refers to the formation of a strictly linear polymer by the reaction (usually by condensation) of two monomers in equimolar quantities. An example is the synthesis of nylon-6,6 whose formula is [−NH−(CH 2) 6 −NH−CO−(CH 2) 4 −CO−] n from one mole of hexamethylenediamine, H 2 N(CH 2) 6 NH 2, and one mole of adipic acid, HOOC−(CH 2) 4 −COOH.
Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B) joined the exclusive club of trillion-dollar stocks on Wednesday, topping $1 trillion in market cap during the day's trading session and closing ...
Few stocks have performed as well as Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B).Since 1965, shares have increased in value by nearly 4,000,000%! A $10,000 investment would now be worth more ...
The ratio of numbers A and B can be expressed as: [6] the ratio of A to B; A:B; A is to B (when followed by "as C is to D "; see below) a fraction with A as numerator and B as denominator that represents the quotient (i.e., A divided by B, or). This can be expressed as a simple or a decimal fraction, or as a percentage, etc. [7]
Berkshire Hathaway B-shares, which trade at 1/1,500th the price of the A-shares, were down as much as 1.1% on Monday and appeared largely unaffected by the error, though volatility was pronounced ...
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.