The molecular formula of perylene is C20H12. What is the molecular weight? What is the empirical formula? What is the empirical formula weight? What is the relationship between the molecular and empirical formula weights?
2007-02-07 13:41:38 · 2 answers · asked by Alan l 1 in Science & Mathematics ➔ Chemistry
the molecular formula weight would be:
20x12.01 (C) + 12 x 1.01(H) = 252.32
The empirical formula is:
C5H3
The empirical formula weight is:
5 x 12.01 (C) + 3 x 1.01 (H) = 63.08
The relationship is that the molecular weight is a multiple of the empirical weight, because the molecular formula is a multiple of the emprical formula.
2007-02-07 13:47:41 · answer #1 · answered by kz 4 · 0⤊ 0⤋
mol. wt=12*2+16+1*12=52
relation:
(empirical formula)n=mol. formula
so,emp. formula=CO^0.5H^6
2007-02-07 13:56:16 · answer #2 · answered by zimzy_999 2 · 0⤊ 0⤋