Further Calculations (Leaving Cert Chemistry): Quizzes

To determine element proportions

$\frac{\text{element mass}}{\text{total mass}} \times 100$

Check they add to 100%

Simplest whole number ratio of atoms

$\text{CH}$

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