3 years ago

How many moles of potassium nitrate, KNO3 are present in a sample with a mass of 85.2 g?

Chemistry

1 answer:

Bingel [31]3 years ago

5 0

0.843 moles would be the answer

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$m_{undissolved}=27g$

Explanation:

Hello there!

In this case, according to the given information of the solubility of copper chloride, as the maximum amount of this salt one can dissolve without having a precipitate, we infer that since just 73 grams are actually dissolved, the following amount will remain solid as a precipitate:

$m_{undissolved}=100g-73g\\\\m_{undissolved}=27g$

Best regards!

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