The empirical formula of a compound gives the simplest whole-number ratio of atoms in the compound.

To find the empirical formula of octane, we need to simplify the ratio of carbon (C) to hydrogen (H) atoms in its molecular formula, C8H18.

The ratio of C to H in the molecular formula is 8:18, which simplifies to 4:9 when we divide both numbers by their greatest common divisor, 2.

Therefore, the empirical formula of octane is C4H9. The number that goes after the C in the empirical formula is 4.

Question

The empirical formula of a compound gives the simplest whole-number ratio of atoms in the compound.

To find the empirical formula of octane, we need to simplify the ratio of carbon (C) to hydrogen (H) atoms in its molecular formula, C8H18.

The ratio of C to H in the molecular formula is 8:18, which simplifies to 4:9 when we divide both numbers by their greatest common divisor, 2.

Therefore, the empirical formula of octane is C4H9. The number that goes after the C in the empirical formula is 4.

Knowee AI · Accepted Answer

The empirical formula of a compound gives the simplest whole-number ratio of atoms in the compound.

To find the empirical formula of octane, we need to simplify the ratio of carbon (C) to hydrogen (H) atoms in its molecular formula, C8H18.

The ratio of C to H in the molecular formula is 8:18, which simplifies to 4:9 when we divide both numbers by their greatest common divisor, 2.

Therefore, the empirical formula of octane is C4H9. The number that goes after the C in the empirical formula is 4.

The molecular formula of octane is C8H18. Its empirical formula is C?H?. What number goes after the C?