in the published literature it is always the molar ratio of precursor gel/synthesis solution but the mass of reagents required to synthesize the precursor gel has not been reported. how do I calculate the mass of reagents required to make the precursor gel of given molar ratio. example

for the precursor gel of following molar ratios: 100 SiO2/333 Na2O/

67.0 Al2O3/20000 H2O/n TPHAC, (n=1)

how do I calculate the amount of reagents required

the reagents are: sodium metasilicate nonahydrate ,sodim hydroxide, sodium aluminate, water and TPHAC