Stoichiometry (Mass to Mass Conversions)


Stoichiometry is absolutely ESSENTIAL for chemistry. You MUST understand this if you want any hope of doing well in Chemistry! This video continues with Example 2: converting from mass to mass. Mole to Mole and Mass to Mass are the two most common types of Stoichiometry problems. You can also do stoichiometry using gas volumes, but they look a little different. We will cover those problems in another video!

Stoichiometry is like balancing your checkbook while wearing a labcoat.
Stoichiometry lets you figure out how much of a substance is used up or produced in a chemical reaction.

It’s really common to measure the amount of one reactant, in order to figure out how much product you expect to get. Or, given how much of one reactant you have, you might want to figure out how much of a second reactant to add so you don’t have any left over.  

Part 1  introduces the concept of stoichiometry, and how balanced chemical equations can be used like recipes (for instance, the recipe for grilled cheese sandwiches). We give an example of how to solve mole-to-mole problems.  
Part II covers mass-to-mass problems.

A practice test about Stoichiometry with full answer key is available for purchase in our digital store.

Video 1: Stoichiometry Part I

Video 2: Stoichiometry Part II

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Full-length Practice Tests with Answer Keys