formulae and amounts Flashcards
how much is avogadros constant
6.02 x 10^23
what does avogadros constant represent
it represents the amount of atoms in 12 grams of carbon-12
what is molecular mass t
this is the mass per mole of a substance
relative molecular mass
average mass of a molecule relative to 1/12th the mass of a carbon-12 atom
spectator ions
ions that dont take part in the reaction
hydrate
any compound that has water molecules
what is a standard solution
the solution with the known concentration
what does avogadros law state
provided RTP is the same, equal volumes of gases will contain same number of molecules
molar volume
the volume of 1 mole of a gas
precipitation reacton
a reaction where an insoluble solid is formed
error
the difference between the value obtained in the experiment and the actual value
concordant results
results that are close together
what products are formed in complete combustion
carbon dioxide and water
what products are formed in incomplete combustion
carbon is a form of soot and carbon monoxide
what is atom economy
this is the measure of proportion of atoms that become part of the desired product
are all nitrates soluble or insoluble
soluble
are most group 1 compouds soluble or insoluble
soluble
formula of hydroxide
OH-
formula of nitrate
(NO3)-
formula of carbonate
(CO3)2-
formula of sulfate
(SO4)2-
how to write ionic equations
1-write the balanced equations
2-check if they are ion AND aqueous
3-cross out anything that hasnt changed and write the rest
mole
this is the amount of substance that contains the same number of particles as the number of carbon atoms in 12g of carbon-12
formula of moles using mass and molar mass
mass/molar mass
