Chemistry - Amount Of Substance

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A level Chemistry FlashCards sobre Chemistry - Amount Of Substance, criado por lucy latuske em 04-03-2018.
lucy latuske
FlashCards por lucy latuske, atualizado more than 1 year ago
lucy latuske
Criado por lucy latuske mais de 6 anos atrás
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Resumo de Recurso

Questão Responda
What is a mole? One mole is the amount of substance that contains as many entities specified by a formula, as there are in 12g of Carbon-12
How do you calculate moles? Moles = mass / Mr
How do you calculate mass? Mass = Mr X Moles
How do you calculate Mr? Mr = mass / moles
What is Avogadro's Constant? 6.02 x 10^23
How do you calculate the number of entities? 6.02 x 10^23 x Number Of Moles
What is 1 dm^3 equal to? 1 litre
How do you convert dm^3 to cm^3 ? x1000
How do you convert cm^3 to dm^3? / 1000
How do you calculate volume? Volume (cm^3) = moles x 24000 Volume (dm^3) = moles x 24
How do you calculate percentage yield? Percentage Yield = Actual yield/ theoretical yield x 100
How do you calculate atom economy? Atom Economy = Mr of desired products / Mr of all products x 100
What is the ideal gas equation? PV=nRT P = pressure (Pa) V = volume (m^3) n = number of moles R = gas constant (8.314) T = temperature (k)
How do you convert degrees C to K (kelvins) ? add 273
How do you calculate moles given concentration and volume? Moles = concentration (mol dm^-3) x volume (dm^3)
Define Relative Atomic Mass (Ar) the ratio of the average mass of one atom of an element to one twelfth of the mass of an atom of carbon-12
Describe relative molecular mass (Mr) the ratio of the average mass of one molecule of an element or compound to one twelfth of the mass of an atom of carbon-12
Define empirical formula the simplest whole number ratio of atoms of each element in a compound
Define molecular formula the actual number of atoms of each element in a compoun

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