= Stoichiometry =

Relationship between the relative quatnties of substances taking part in a
reaction or fomring a compund typically a ratio of whole integers

== Moles ==

Standard unit of quantity of 6.022 * 10^23

* One mole of any element has a mass in grams equal to its atomic mass
* Convert from moles to grams by multiplying number of moles by amu of that
  substance

== Percentage compositon ==

weight of percent of each of the elements in a formula

{{{
(atoms in element) * (atomic weight) / (formula weight of compound) * 100%
  }}}
  
== Empirical Formula ==

Experimentally determinded formulas representing the lowest whole number ratio
of the elements in the compound

* C,,6,,H,,6,, => CH

To find an impirical formula you need

* Elements in the compound
* % compostion
* Periodic table

== Chemical Equations ==

Shorthand that describes the chemical transformations of matter using chemical
formulas.

* A + B => C + D
* A + B
 - Reactants (consumed)
* C + D
 - Products (produced)
 
Law of conservation of mass
* Mass is neither created nor destoryed in chemical reactiosn
* see [[matter#laws]]
 
total number of molecules is always consistent 

== Limiting Reagents ==

Reagent in a chemical reaction whose quantity limits the amount of product
formed

Excess reagent is the opposite
 
== Percent Yield == 

Amount of product formed in a lab reaction expressed as percentage

Is actual/expected
 
== [[solution|Solution]] ==

see [[solution|Solution]]
 
 
 [[index]]