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Volgvan
3 years ago
9

A certain solution is 70% ethanol and the rest being distilled water. If there are 12 moles of ethanol per litre of solution, fi

nd the density of the solution.​
Chemistry
1 answer:
Aleks04 [339]3 years ago
6 0

Answer:

0.55284g/mL

Explanation:

Hello there!

In this case, given the by-mass percent of ethanol:

\frac{70gEt}{100gSol}

It is possible to compute the density by using its molar mass to find the grams in one liter of solution:

12\frac{molEt}{1L}*\frac{46.07 gEt}{1molEt}=552.85g/L

However, by taking the g/mL we obtain:

552.84\frac{g}{L} *\frac{1L}{1000mL}=0.55284g/mL

Which is the density of the solution.

Best regards!

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