Mole Ratios in Reactions
Learning Objective
I can use mole ratios to calculate the amount of reactants and products in a chemical reaction.
Key Concepts
A mole is a very large number, specifically 6.022 x 10²³, and is called Avogadro's number.
The molar mass of a substance is the mass of one mole of that substance, expressed in grams.
In stoichiometric calculations, you can convert from mass to moles of one substance, then to moles and mass of another substance using mole ratios from the balanced equation.
Practice Questions
This lesson includes 9 practice questions to reinforce learning.
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1. What is a mole, and why is it important in chemistry?
2. Explain how to determine the molar mass of a compound.
3. If you have 2 moles of H₂ and 1 mole of O₂, how many moles of H₂O can you produce according to the balanced equation 2H₂ + O₂ → 2H₂O?
...and 6 more questions
Educational Video
The Mole: Avogadro's Number and Stoichiometry
Professor Dave Explains