You have seven closed containers, each with equal masses of chlorine gas (Cl 2). You add 10.0 g of sodium to the first sample, 20.0 g of sodium to the second sample, and so on (adding 70.0 g of sodium to the seventh sample). Sodium and chlorine react to form sodium chloride according to the equation
2 Na (s) + Cl2 (g) → 2 NaCl (s)
After each reaction is complete, you collect and measure the amount of sodium chloride formed. A graph of your results is shown below.
Calculate the mass of NaCl formed when 20.0 g of sodium is used.
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