, It takes 2.0 moles of sodium to react with 2.0 moles of chlorine gas in a synthesis

,

It takes 2.0 moles of sodium to react with 2.0 moles of chlorine gas in a synthesis reaction. How many grams of the excess reactant is leftover? (5.07)
1.0 mol Cl2 c. 1.0 mol Na
0.5 mol Cl2 d. 0.5 mol Na