Consider the Reaction Between Sodium Metal and Chlorine Gas to Form

Consider the reaction between sodium metal and chlorine gas to form sodium chloride (table salt) : 2Na(s) + Cl₂(g) → 2NaCl(s) If the mass of the sodium solid increases by 0.500 g, what mass of sodium metal should have reacted?

A) 0.250 g
B) 0.500 g
C) 0.0811 g
D) 0.162 g
E) 0.324 g