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Is the following equation correct:

$$m = \frac{1000 \times M}{M \times M_b - 1000 \times d},$$

where $M$ - molarity, $m$ - molality, $d$ -density of solution, $M_b$ - molar mass of solute?

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    $\begingroup$ You need to mention the units you're using for density. Is it $\pu{g/ml}$, or $\pu{g/l}$ or $\pu{kg/m^3}$? $\endgroup$ – Pritt says Reinstate Monica Jul 11 '17 at 4:39
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$$m = \frac{M}{\rho - (M \times wt. of solute)}$$

$m=$molality

$M=$Molarity

$\rho=$density

all quantities in S.I. units

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