What mass in grams of sodium hydroxide is produced if 20.0 g of sodium metal reacts with excess water according to the chemical equation #2Na(s) 2H_2O(l)->2NaOH(aq)+H_2(g)#?
Moles of NaOH
Clearly, there is a 1:1 equivalence between the moles of sodium, and moles of sodium hydroxide. One half an equiv of dihydrogen gas is also produced. We know that