Physical - 1.2 Amount Of Substance Flashcards
Define atom economy
The measure of the amount of starting materials that end up as useful products.
Define Avogadro’s constant
The number of atoms, molecules or Ians in one mole of a given substance.
Define empirical formula
The smallest whole number ratio of atoms of each element in a compound.
Define limiting reactant
The reactant that is completely used up since it limits the amount of products formed.
Define mole
The mass of a substance containing number the same of units as there are atoms in exactly 12g of Carbon-12
Define molecular formula
The actual ratio of atoms of each element present in a compound.
Define percentage yield
The percentage yield ratio of the actual yield of product from a reaction compared with the theoretical yield.
Define relative atomic mass
The average mass of an atom of an element compared to 1/12th the mass of an atom of Carbon-12
Define relative molecular mass
The average mass of one molecule of an element or compound compared to 1/12th the mass of an atom of carbon-12
Define concentration
The amount of substance per unit volume
What is avagadros constant?
6.02 x 10^23
What is the ideal gas equation?
pV = nRT
What are the units of volume in the ideal gas equation?
m^3
cm^3 -> m3 = divide by 1,000,000
What are the units of pressure in the ideal gas equation?
Pa
What are the units for temperature in the ideal gas equation?
K
