Chemistry Problem

Question

What volume of solution will contain 35g of NaCl if the solution concentration is 0.85 M?

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Answer 1

Convert 35 g NaCl to mols:

35 g NaCl x 1 mol NaCl / 58.4 g = 0.599 mols NaCl

Use dimensional analysis to find volume of 0.85 M NaCl (0.85 mols NaCl / L):

0.599 mols NaCl x 1 L / 0.85 mols) = 0.705 L NaCl = 705 mls = 710 mls (2 sig. figs.)