The empirical formula of the chrysolite is Mg₃Si₂H₃O₈ while the molecular formula is Mg₆Si₄H₆O₁₆. .
<h3>How to calculate empirical formula?</h3>
Empirical formula is the notation indicating the ratios of the various elements present in a compound, without regard to the actual numbers.
The empirical formula of a substance can be calculated as follows:
- 28.03% Mg = 28.03g
- 21.60% Si = 21.60g
- 1.16% H = 1.16g
- 49.21% O = 49.21g
Next, we divide by the atomic mass of each element as follows:
- Mg = 28.03g ÷ 24 = 1.17mol
- Si = 21.60g ÷ 28 = 0.77mol
- H = 1.16g ÷ 1 = 1.16g
- O = 49.21g ÷ 16 = 3.08mol
Next, we divide by smallest mole value as follows:
- Mg = 1.17 ÷ 0.77 = 1.51
- Si = 0.77 ÷ 0.77 = 1
- H = 1.16 ÷ 0.77 = 1.51
- O = 3.08 ÷ 0.77 = 4
We multiply each ratio by 2 to get a whole number as follows:
Mg = 3, Si = 2, H = 3, O = 8
Therefore, the empirical formula is Mg₃Si₂H₃O₈
{Mg₃Si₂H₃O₈}n = 520.8g/mol
259n = 520.8
n = 2.01
Molecular formula of the chrysolite is Mg₆Si₄H₆O₁₆.
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