For the reaction, calculate how many grams of the product form when 3.2 g of Na2O completely reacts.

Question

Assume that there is more than enough of the other reactant.
Na2O(s)+H2O(l)→2NaOH(aq)

Answer 1

mols Na2O = grams/molar mass = ?
Using the coefficients in the balanced equation, convert mols Na2O to mols NaOH. That will be mols NaOH = 2 x mols Na2O
Now convert mols NaOH to grams NaOH. grams = mols x molar mass