**The molar mass of citric acid is 192.124 g/mol.**

**The molar mass of water is 18.016 g/mol.**

**In mass percent:**

$\overline{){\mathbf{mass}}{\mathbf{}}{\mathbf{percent}}{\mathbf{=}}\frac{\mathbf{mass}\mathbf{}\mathbf{solute}}{\mathbf{mass}\mathbf{}\mathbf{solution}}{\mathbf{\times}}{\mathbf{100}}}$

$\mathbf{mass}\mathbf{}\mathbf{solute}\mathbf{=}\mathbf{(}\mathbf{1}\mathbf{.}\mathbf{00}\mathbf{}\overline{)\mathbf{L}}\mathbf{)}{(1.37\frac{\overline{)\mathrm{mol}}}{\overline{)L}})}{\left(\frac{192.124g}{1\overline{)\mathrm{mol}}}\right)=}$**263.21 g**

$\mathbf{mass}\mathbf{}\mathbf{solvent}\mathbf{=}\mathbf{1}\mathbf{}\overline{)\mathbf{L}}\left(\frac{1\overline{)\mathrm{mL}}}{{10}^{-3}\overline{)L}}\right)\left(\frac{1\overline{){\mathrm{cm}}^{3}}}{1\overline{)\mathrm{mL}}}\right)(1.10\frac{g}{\overline{){\mathrm{cm}}^{3}}})\mathbf{=}$**1,100 g**

A 1.37-*M* solution of citric acid (H_{3}C_{6}H_{5}O_{7}) in water has a density of 1.10 g/cm^{3}. Calculate the mass percent, molality, mole fraction, and normality of the citric acid. Citric acid has three acidic protons.

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