What mass in grams of {eq}12.7 \% {/eq} by mass in {eq}\rm KNO_3 {/eq} solution is required to have a total of {eq}\rm 30.0 \ g\ KNO_3 {/eq}?

## Question:

What mass in grams of {eq}12.7 \% {/eq} by mass in {eq}\rm KNO_3 {/eq} solution is required to have a total of {eq}\rm 30.0 \ g\ KNO_3 {/eq}?

## Mass Percent:

Concentration units are essential in expressing the relative amount of solute and solvent in a solution. The amount of solute and solvent can be expressed in terms of mass in grams. The mass percent gives the mass of solute present per 100 g of solution.

## Answer and Explanation: 1

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View this answerThe concentration unit of percent by mass shows that 12.7 g of potassium nitrate is present per 100 g of solution. The percent by mass is used as a...

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Chapter 9 / Lesson 7What is percent composition? Learn how to find the percent composition of compounds. See how to determine the empirical formula from percent composition.

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