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10 cards from this deck
Proportion of compound's mass from each element as a percentage
element mass in 1 molmolar mass×100\frac{\text{element mass in 1 mol}}{\text{molar mass}} \times 100molar masselement mass in 1 mol×100
Simplest whole-number ratio of atoms of each element in a compound
Actual number of atoms of each element present in a molecule
They form crystal lattices, not discrete molecules
n=mMn = \frac{m}{M}n=Mm where nnn=moles, mmm=mass, MMM=molar mass
Each water molecule contains 2 hydrogen atoms - multiply by 2
molar mass of compoundempirical formula mass\frac{\text{molar mass of compound}}{\text{empirical formula mass}}empirical formula massmolar mass of compound
Molecular formula is a whole-number multiple of empirical formula
Assume 100 g of compound; percentages become masses in grams
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