Mole To Mole Conversions

When you are given moles of one element and are looking for moles for another element use this conversion chart!! Mole A is what you're given in the problem. When it says Coefficients you use the number in front of the compound.
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Grams To Moles!

Use This conversion chart when you are given Moles, But you are asked to find the Grams you can make with the Given.
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Grams To Grams

Use this Conversion when you are given grams of one element and you are asked to find grams of another element.
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Limiting and Excess Reactant

A limiting reactant is the element that will run out first when you are doing an experiment. The excess Reactant is the opposite.

Percentage and Theoretical Yield

When finding the theoretical yield, you use the gram to gram conversion. You do this for both reactants and the one that is the least mass you will use for the theoretical yield.

To find percentage yield, you take the actual yield, given in the question, and divide that by your theoretical yield. once you have done that multiply it by one-hundred and you will have the percent you are looking for.

Magnesium Chloride + sodium Hydroxide

This is a double replacement reaction. So to balance it you need to swap the anions. In doing that you end up with Magnesium Hydroxide + Sodium Chloride. once you do that you need to balance it and you should end up with this.
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Examples of everything you may have learned

Molar Masses

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Mole to Mole

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Grams to Grams

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Limiting and Excess Reactants

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MgCl2 + NaOH - magnesium chloride and sodium hydroxide

Theoretical Yield

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I knew it reacted because it went from two aqueous reactants to one aqueous and one precipitate.