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Nataliya [291]
3 years ago
5

What would you need to do to calculate the molality of 10 g of NaCl in 2 kg of

Chemistry
1 answer:
jasenka [17]3 years ago
7 0

Answer:

O B. Convert the 10 g of NaCl to moles of NaCl.

Explanation:

The formula for finding the molality is m=moles of solute/kg of solvent. The solute for this question is NaCl and the solvent is water.

(10g NaCl)(1 mol NaCl/58.44g NaCl)=0.1711 mol NaCl

58.44 is the molar mass of NaCl

m=0.1711 mol NaCl/2 kg H2O

m=0.085557837

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Mass
DiKsa [7]

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<h3>Further explanation</h3>

Given

6.00 g of a certain compound X

The molecular molar mass of 180. g/mol

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H₂O=3.6 g

Required

The molecular formula

Solution

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= 0.2 : 0.4 : 0.2

= 1 : 2 : 1

The empirical formula : CH₂O

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(12+2+16)n=180

(30)n=180

n=6

(CH₂O)₆=C₆H₁₂O₆

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