Answer:
C₈H₂₀O₄Si
Step-by-step explanation:
The moles of each atom (Using atomic weight) are:
C: 196.01g × (1mol / 12.01g) = 16.32 moles of C
H: 41.14g × (1mol / 1.01g) = 40.73 moles of H
O: 130.56g × (1mol / 16g) = 8.16 moles of O
Si: 57.29g × (1mol / 28.09g) = 2.04 moles of Si
Dividing in the number of moles of Si to obtain the simplest ratio:
C: 16.32mol C / 2.04mol: 8
H: 40.73mol H / 2.04mol: 20
O: 8.16 mol O / 2.04mol: 4
Si: 2.04mol / 2.04mol: 1
Thus, empirical formula of the compound is:
C₈H₂₀O₄Si.
Molar mass for this formula is:
12.01g/mol × 8 + 1.01g/mol × 20 + 16g/mol × 4 + 28.09g/mol × 1 =
208.37 g/mol ≈ Molecular weight obtained in the experiment.
Thus, molecular formula of the compound is:
C₈H₂₀O₄Si