The reaction of soda ash (Na2CO3) with calcium sulphate (CaSO4) in water is represented by the following chemical equation:
Na2CO3 + CaSO4 --> CaCO3 + Na2SO4
Assuming that this reaction is complete and that there is 153mg/l of CaSO4 initially present, what is the mass load of the soda ash taht must be added to complete the reaction in:
a) 1mL of water
b) 10 000m^3 of water