Basic Concepts of Chemistry

1.66*10^-27 kg

(M1X+M2Y)/X+Y) where X and Y can be in percentage or fraction of it is in percentage then X+Y=100% if in fraction X+Y=1

number of molecules × atomicity

density of substance/density of H2O at 4°C

absolute density=PM/RT vapour density= Molecular mass/2 defined as density of gas with respect to H2 gas t same temperature and pressure

molar mass/n-factor

n-factor= valency of atom ,total charge on an ion , total charge on cation or anion,no of oH ions released, no of H+ released

mass%of an element=(mass of element /mass of compound)*100%

(atomic mass of element/percentage of element in compound)*100

MF=(EF)n

given molealanced equation mole ( the minimum of this is the limitingreagent )

(amount of reactants calculated from the chemical equation/amount of reactants taken)×100%

(actual yeld/theoretical yield )*100%