# Stochiometry

### 15 terms by kellenmontera

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Grams, Amu

### combustion

A _______ reaction is when oxygen combines with another compound to form water and carbon dioxide

### decomposition

a complex molecule breaks down to make simpler ones

### Combination

two or more simple compounds combine to form a more complicated one

### formula weight

the sum of atomic weights of each atom in its chemical formula

### molecular weight

sum of atomic weights

### % element

(# of atoms)(atomic weight of element)/(formula weight) x100=__________

### mole (mol)

amount of matter that contains as many objects (atoms, molecules) as the number of atoms

### molar mass

the mass of one mol of a substance in grams; equal to formula weight in Amu

### molecular formula

molecular weight/empirical formula weight=______

### limiting reactant

it determines, or limits the amount of product formed

### theoretical yield

the quantity of the product that is calculated to form when all of the limiting reactants react

### percent yield

actual yield/theoretical yield x 100=____________

### empirical formula

grams to moles....divide each number of moles by smallest mole

Example: