<span>The molecular formula is 8(CH2O)= C8H16O8.</span>
The process referred to here is <u>filtration.</u>
I think the correct answer from the choices listed above is the second option. <span>This is a double displacement reaction. Both of the reactants are soluble, but when they are combined for a reaction, magnesium carbonate will form a precipitate. Hope this answers the question.</span>