Chemistry - formulae to learn

silver ion

Ag+

zinc ion

Zn²⁺

ammonium ion

NH4+

carbon monoxide

Co

nitrogen monoxide

NO

nitrogen dioxide

NO2

sulfur dioxide

SO2

sulfur trioxide

SO3

ammonia

NH3

methane

CH4

hydrogen sulfide

H2S

silicon dioxide

SiO2

hydrochloric acid

HCl

sulfuric acid

H2SO4

nitric acid

HNO3

phosphoric acid

H3PO4

nitrate ion

NO3-

Sulfate ion

SO4 2-

carbonate ion

CO3 2-

hydrogen carbonate ion

HCO3-

hydroxide ion

OH-

phosphate ion

PO4 3-

1 mole

contains the same number of atoms as 12g of carbon 12

molar mass

the mass of one mole of a substance

molar mass

mass/ number of moles