Respuesta :

deyaadrianaorrsph
molality = moles of solute/ kg of solvent

You need to switch the units you have to fit the formula so

450 g = .45 kg

9.2 g/ 40.078 g = .2296 moles of calcium
.2296 moles/ .45 kg = .51 m

The concentration is .51 m

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