Question

What is the empirical formula of vitamin A ( C=83.85, H=10.56, O=5.58)
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Answer 1

The empirical formula of vitamin A : C₂₀H₃₀O

Further explanation

The empirical formula is the smallest comparison of atoms of compound =mole ratio of the components

The principle of determining empirical formula

• Determine the mass ratio of the constituent elements of the compound.
• Determine the mole ratio by dividing the percentage by the atomic mass

mol ratio of C : H : O ⇒

`\tt (83.85)/(12)/ (10.56)/(1)/ (5.58)/(16)\\\\6.9875/ 10.56/ 0.34875\rightarrow divide~by~smallest(0.34875)\\\\20/ 30/ 1`