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Yuri [45]
3 years ago
5

How many moles are in an 8.40 grams of a non electrolyte solution

Chemistry
1 answer:
Crazy boy [7]3 years ago
6 0

Answer: you need to define what is the substance

Which mass is 8.40 g. If you mean you have pure

Water, amount of substance n = m/M = 8.40 / 18.016 g/ mol

= 0.466 mol

Explanation:

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Quinine, an antimalarial drug, is 8.63% nitrogen. There are two nitrogen atoms per molecule. What is the molecular weight of qui
Furkat [3]

Answer:

324.18 g/mol

Explanation:

Let the molecular mass of the antimalarial drug, Quinine is x g/mol

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Nitrogen present in the drug is 8.63% of x

So, mass of nitrogen = \frac {8.63}{100}\times x

Also, according to the question,

2 atoms are present in 1 molecule of the drug.

Mass of nitrogen = 14.01 amu = 14.01 g/mol (grams for 1 mole)

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