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tester [92]
3 years ago
14

What is the molality of a solution containing 15.0g NaCl dissolved in 50.0g water?

Chemistry
1 answer:
Brrunno [24]3 years ago
8 0
Hey there!

Molar mass NaCl = 58.44 g/mol

number of moles:

n = m / mm

n = 15.0 / 58.44

n = 0.2566 moles of NaCl

Volume in Kg :

50.0 g / 1000 => 0.05 Kg

Therefore :

Molality = moles of solute / volume

Molatity = 0.2566 / 0.05

Molality = 5.132 mol/kg
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n(H₂O) = 3,04 g ÷ 18 g/mol.
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3 0
3 years ago
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