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What is the molality of a solution containing 1330g of methanol and 16.6g of sodium bromide?
Cutesox89
Molality denotes the number of moles of solute per kilogram of solvent. The molar mass for sodium bromide is 102,9 g/mol.
nNaBr= 16,6 g/ 102,9 g/mol = 0,16 moles
The concentration of the solution is therfore = 0,16 moles/ 1,330 kg = 0,12 molal
-While the above is true it should 0.121 molar due to significant digits (just a technicality)
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∙ 12y ago
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