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inna [77]
4 years ago
15

You have a 0.850 M NaCl solution. What is the concentration of NaCl in mass percent? (The density of this solution is 1.05 g/mL)

.
Chemistry
2 answers:
Eduardwww [97]4 years ago
8 0

Answer:

The answer to the question is

The solution contains 4.73 % by mass of NaCl

Explanation:

To solve this we list out the variables thus

The  Molarity of NaCl = 0.850 M,  

Density of solution = 1.05 g/mL

Molar mass of NaCl = 58.44 g/mol

Therefore mass of NaCl in he solution = (58.44 g/mol) × (0.850 M) =  49.674 g of NaCl

However the density = 1.05 g/mL or 1050 g/L

Therefore the mass percent of NaCl in 1 liter of solution or 1050 g of solution = (49.674/1050) × 100 = 4.73 %

The concentration of NaCl in mass percent = 4.73 %

Nesterboy [21]4 years ago
4 0

Answer:

4.74 %.

Explanation:

Molar mass of NaCl = 23 + 35.5

= 58.5 g/mol.

Molar concentration = molar mass/volume

Density = mass/volume

Converting g/ml to g/l,

1000 ml = 1 l

= 1.05 g/ml * 1000 ml/1 l

= 1050 g/l

Mass concentration = mass/volume

= molar concentration * molar mass

= 0.85 * 58.5

= 49.7325 g/l.

Comparing the density and the mass concentration in %,

= 49.7325 : 1050

= 4.74 %

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Answer:

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Explanation:

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3 years ago
A gas occupies 50.0mL at a standard temp. What volume would it occupy at 335 Celsius with
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Answer:

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Explanation:

Given data:

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Answer:

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