Problem: 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 equation2 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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mass NaCl=20 g Na(1 mol Na22.99 g Na)(2 mol NaCl2 mol Na)(58.44 g NaCl1 mol NaCl)

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Problem Details

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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Our tutors have indicated that to solve this problem you will need to apply the Stoichiometry concept. You can view video lessons to learn Stoichiometry. Or if you need more Stoichiometry practice, you can also practice Stoichiometry practice problems.

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Based on our data, we think this problem is relevant for Professor Randles' class at UCF.

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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.