SOLUTION CONCENTRATIONS. REVIEW: A solution is a ________________ mixture. The two parts of a...
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Transcript of SOLUTION CONCENTRATIONS. REVIEW: A solution is a ________________ mixture. The two parts of a...
REVIEW:
A solution is a ________________ mixture.
The two parts of a solution are the
______________ & ____________
Which of these solutions is dilute?Which is concentrated?
Dilute and concentrated are terms that are a
description of concentration.
Often, a ____________________ measure of solution is needed. There are a number of different types. We will learn about 3 of them.1) Percent by mass2) PPM3) Molarity
You have a candy cane that weighs 10 grams. You also determine that it contains 9.8 grams of sugar. What is the percent by mass of sugar in your candy cane?
The formula for percent by mass is:
What do fish breathe?
Many fish kills are caused by a lack of this.The minimum concentration most fish need is
Another important example of the use of PPM’s: Here are carbon dioxide levels in
the atmosphere since 900 A.D.
* What has caused the CO2 levels in the atmosphere to increase? * What are 2 reasons why this a VERY BIG problem!
Demonstration:I will pour 0.10 molar HCl (0.10 M HCl) on my hand…Now, I will pour 12 molar HCl (12 M HCl – i.e. concentrated HCl) on my hand…..
The point is…..Concentration matters! both in chemistry labs
and in real life.
So you must understand what it is, and how to do calculations with
concentrations