200g of NaCl is produced.
First, convert 200g Na into moles of Na. According to the periodic table, 1 mole of Na has a mass of
Next multiply by the mole ratio. According to the balanced equation, for every 2 moles of Na, 2 moles of NaCl are produced.
Then convert moles of NaCl to grams. Again according to the periodic table, the mass of NaCl is
Round the answer to one significant figure, because the amount given in the problem, 200g, has only one sig fig.