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stepan [7]
3 years ago
14

I will mark brainliest

Chemistry
2 answers:
Veronika [31]3 years ago
5 0

I believe the answer is B??????????? Hope this helps

~Queensupreme

Natalija [7]3 years ago
4 0

krill is the primary consumer

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An aqueous solution is 1.00% by mass ethanol, CH3CH2OH, and has a density of 0.996 g/mL.
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The molarity of ethanol in the solution is 0.217 M

<h3>Further explanation</h3>

Given

1% by mass

density = 0.996 g/ml

Required

The molarity

Solution

mass/ml of Ethanol :

1% x 0.996 g/ml = 0.00996 g/ml

For 1 L solution :

0.00996 g/ml x 1000 ml/L = 9.96 g/L

Convert to mol/L(MW ethanol=46 g/mol) :

9.96 g/L : 46 g/mol= 0.217 mol/L = 0.217 M

Or you can use equation :

\tt M=\dfrac{\%mass\times \rho\times 10}{MW}\\\\M=\dfrac{1\times 0.996\times 10}{46}=0.217

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