Percentage composition example (Edexcel GCSE Chemistry): Flashcards

$\frac{\text{Ar} \times \text{atoms} \times 100}{\text{RFM}}$

23

32

16

142

$(23 \times 2) + 32 + (16 \times 4) = 142$

$23 \times 2 = 46$

$\frac{46}{142} \times 100 = 32.4\%$