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12 questions from this quiz
To determine element proportions
element masstotal mass×100\frac{\text{element mass}}{\text{total mass}} \times 100total masselement mass×100
Check they add to 100%
Simplest whole number ratio of atoms
CH\text{CH}CH
Convert percentages to masses
Divide all by smallest moles
Using mass measurements to find formulae
Final mass minus initial mass
Mole ratios
22.4 L
Multiply moles by 22.4
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