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What is the percent by mass of potassium nitrate in a solution made from 45.0g KNO3 and 295 mL of water?

What is the percent by mass of potassium nitrate in a solution made from 45.0g KNO3 and 295 mL of water?

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The density of water is 0.997 g/mL.

Asked by Coulter, Last updated: Jan 14, 2025

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2 Answers

Matz Lewis Clark

Matz Lewis Clark

Traveler and writer by profession.

Matz Lewis Clark
Matz Lewis Clark, College student, Graduation, Orlando

Answered May 01, 2019

The correct answer is 13.3%.
First, let’s calculate the mass of water
Mass of water = 295ml * 0.997g/ml
= 294 g
To calculate % by mass of potassium nitrate in the solution
% by mass = (45* 100) / (45 + 294)
= 13.3%
Hope you find this helpful

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John Smith

John Smith

John Smith
John Smith

Answered Jan 25, 2017

13.3%
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