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What is the molarity of a solution that contains 20.45 g of sodium chloride (NaCl) dissolved in 700.0 mL of solution?

  • blahblahmali: molarity is the number of moles of solute in 1 L of solution.
    the mass of NaCl added - 20.45 g
    number of moles of NaCl - 20.45 g / 58.5 g/mol = 0.350 mol
    volume of the solution is 700.0 mL 
    since molarity is the number of moles in 1000 mL 
    and if 700.0 mL contains - 0.350 mol 
    therefore 1000 mL contains - 0.350 mol / 700.0 x 1000 = 0.500 mol 
    hence molarity of solution is 0.500 M
Molarity Solution Stoichiometry

Molarity Solution Stoichiometry

Source: solutionstoichiometry.weebly.com

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