6. How many formula units of sodium chloride salt is produced from 18.0 g of sodium? 2Na(s)+Cl_(2)(g)arrow 2NaCl(s) 4.71times 10^23 formula units of NaCl E 9.43times 10^23 formula units of NaCl 2.17times 10^25 formula units of NaCl E 1.08times 10^25formula units ofNaCl

To solve this problem, we need to follow these steps:<br /><br />1. Calculate the number of moles of sodium (Na) in 18.0 g.<br />2. Use the stoichiometry of the balanced chemical equation to determine the number of moles of sodium chloride (NaCl) produced.<br />3. Convert the number of moles of NaCl to the number of formula units.<br /><br />Step 1: Calculate the number of moles of sodium (Na) in 18.0 g.<br />The molar mass of sodium (Na) is 22.99 g/mol.<br />Number of moles of sodium (Na) = 18.0 g / 22.99 g/mol = 0.783 mol<br /><br />Step 2: Use the stoichiometry of the balanced chemical equation to determine the number of moles of sodium chloride (NaCl) produced.<br />According to the balanced chemical equation, 2 moles of sodium (Na) produce 2 moles of sodium chloride (NaCl).<br />Number of moles of sodium chloride (NaCl) produced = 0.783 mol Na × (1 mol NaCl / 1 mol Na) = 0.783 mol NaCl<br /><br />Step 3: Convert the number of moles of sodium chloride (NaCl) to the number of formula units.<br />The number of formula units of sodium chloride (NaCl) can be calculated using Avogadro's number, which is 6.022 × 10^23 formula units/mol.<br />Number of formula units of sodium chloride (NaCl) = 0.783 mol NaCl × (6.022 × 10^23 formula units/mol) = 4.71 × 10^23 formula units<br /><br />Therefore, the correct answer is:<br />$4.71\times 10^{23}$ formula units of NaCl