Molarity to percent by mass. Convert 1.672 mol/L MgCl2(aq) solution to percent by mass of MgCl2 in the solution. The solution density at this concentration is 1.137 g/mL. Answer to 4 significant figures with appropriate units.

Explanation:

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In this case, since the molarity of magnesium chloride (molar mass = 95.211 g/mol) is 1.672 mol/L and we know the density of the solution, we can first compute the concentration in g/L as shown below:

Next, since the density of the solution is 1.137 g/mL, we can compute the concentration in g/g as shown below:

Which is also the by-mass fraction and in percent it turns out:

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the correct answer would be d. hope this !