Etymology[ edit ] The term stoichiometry was first used by Jeremias Benjamin Richter in when the first volume of Richter's Stoichiometry or the Art of Measuring the Chemical Elements was published. In patristic Greek, the word Stoichiometria was used by Nicephorus to refer to the number of line counts of the canonical New Testament and some of the Apocrypha. Definition[ edit ] A stoichiometric amount [1] or stoichiometric ratio of a reagent is the optimum amount or ratio where, assuming that the reaction proceeds to completion:

Would you like to merge this question into it? MERGE already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it? MERGE exists and is an alternate of. Therefore, we want the number in the ratio.

In order to do that, we need to multiply BOTH numbers in the ratio by a number so that the second number of the new ratio is equal to The first number of the new ratio is the percent. Ratio is another form of a fraction, for instance:. I have 1 apple to two oranges, which can be expressed as 1: How do you convert a percent to a ratio?

Ratios are good for comparing two quantities. Like in a classroom, the ratio of girls to boys, for example.

But the ratio is comparing the girls to the boys, not the entire class. Now the ratio can be made of This can be simplified to a How are decimals percents and ratios related? Think of it this way.

I hope this helps some. Converting ratio into percent? There are a bunch of ways of writing ratios. If you compare them to a part out of a whole it could be part out of whole, part: But if you are just comparing part to part, it could be part to part, part: If this confuses you, just substitute the words with numbers, like instead of part you could write 4 and instead of whole, you could write You can also reduce ratios so instead of 4 to 16, you can write 1 to 4 since both 4 and 16 are divisible by 4.

Hope that helps you. Thanks, this is, like the only place on the internet I could find that had the answer I was looking for. Thanks, this really helped!

Samally78 How do you convert ratios to percents? The above works if the ratio is comparing something to the total, like if the 4: So it is important to know the context of the ratio, before you can just apply one rule and plug and chugas one professor used to tell me.

One real life example from my work. Everybody wants to see real-life examples. We get 2 different chemical which is used to process printing plates.

The chemicals are shipped concentrated, and we dilute with water here before use.Household Survey Data. The unemployment rate remained at percent in October, and the number of unemployed persons was little changed at million.

Over the year, the unemployment rate and the number of unemployed persons declined by percentage point and ,, respectively. How to Calculate Mass Percent. In this Article: Article Summary Solving for Mass Percent When Given Masses Solving for Percent Mass When Not Given Masses Community Q&A Mass percent tells you the percentage of each element that makes up a chemical compound.

Finding the mass percent requires the molar mass of the elements in the compound in grams/mole or the number of grams used to make a . Mathematics Glossary» Glossary Print this page.

Addition and subtraction within 5, 10, 20, , or Addition or subtraction of two whole numbers with whole number answers, and with sum or minuend in the range , , , or , respectively.

Let’s say you know your friend Alicia has 7 pairs of jeans and you’re wondering how many shirts she has, based on the ratio or rate of 5 shirts to one pair of jeans. We can do this with math quite easily by setting up the following proportion, which is an equation (setting two things equal to one another) with a ratio on each side: \(\displaystyle \frac{{\text{shirts}}}{{\text{jeans.

Ratio/Proportion Word Problems Relating Two Things Together: a Rate. It takes 2 minutes to print out 3 color photos on Erin’s printer. Write an equation relating the . Powered by Create your own unique website with customizable templates.

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