[tex]
[tex]0.004741 \, \text{g/ml} \times 200 \, \text{ml} = 0.9482 \, \text{g} [/tex]
[tex]n = \frac{\text{masa}}{\text{masa moleculară}}[/tex]
[tex]K = 39.10 \, \text{g/mol}, \, Mn = 54.94 \, \text{g/mol}, \, O = 16.00 \, \text{g/mol}[/tex]
[tex]n = \frac{0.9482 \, \text{g}}{158.04 \, \text{g/mol}} ≈ 0.006 \, \text{mol}[/tex]
[tex]0.006 \, \text{mol} \div V \, \text{litri} = 0.0500 \, \text{mol/l}[/tex]
[tex]V = \frac{0.006 \, \text{mol}}{0.0500 \, \text{mol/l}} ≈ 0.120 \, \text{litri} = 120 \, \text{ml}[/tex][/tex]
