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Stoichiometry Topics in Depth
Our Mass is AtomicRemember chemical structures and formulas? Yeah, they're still important. We're going to use them to study the relationship between the mass of atoms and the mass of molecules. We...
Our Spirit Animal is the MoleAtomic mass units provide a relative scale for the masses of the elements. (Not to get all "Einstein" on you or anything.) When we say "relative," we mean helium is sma...
Now that we know all about atomic masses we can move on to bigger and better things…molecules. (Maybe not better. We don't want to offend all the atoms out there.) If we know the atomic masses of...
Another common type of stoichiometry problem on exams and quizzes involves calculating percent composition, which is the percent by mass of each element in a compound.Suppose a pharmaceutical compa...
What is Stoichiometry?
Reactions + Equations + Chemistry + You = UnstoppableAll of this stoichiometry stuff is just fine and dandy, but who really cares how much an atom or molecule weighs? Sure, it's nice to know that e...
Reactants and Products
To Be a Reactant or a Product, That is the QuestionSo far we've covered all of the basic details that are necessary to understand stoichiometry. The question remains, however. What is stoichiometry...
Our Reagents are LimitlessWe almost have enough information to solve any sort of stoichiometry problem that our chemistry teachers throw at us. There is one very important concept that we've yet to...
We've almost reached the end of our stoichiometric journey. Almost brings a tear to our eye. Almost.We learned that the amount of limiting reagent present at the start of a reaction determines the...
Test Your Knowledge
Atomic Mass1. The mass value shown on the periodic table for each element is equal to ____________.A. the atomic mass of the most abundant isotopeB. the atomic mass of the least abundant isotopeC....
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