about molality?

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2007-10-06 02:43:52 · 2 answers · asked by Dr. An 1 in Science & Mathematics ➔ Chemistry

2 answers

Molality = number of moles of a given per kilogram of SOLVENT (not solution) as opposed to:

Molarity = number of moles of a given substance per litre of solution.

The determination of molality ONLY requires a good balance.

2007-10-06 03:04:57 · answer #1 · answered by BB 7 · 0⤊ 0⤋

molality is the ratio of moles of solute to the killograms of solvent
molality = moles of solute/ kg of solvent
for example a solution prepared with 1.34 moles of NaNO3 and 2.50kg of water the molality is 1.34 mols/ 2.50kg= 0.540m

2007-10-06 03:35:58 · answer #2 · answered by johnnydepp2010 2 · 0⤊ 0⤋