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29 October, 19:37

3) Which pair of formulas represents the empirical formula and molecular

formula for a certain (the same) compound?

A. CH4 and C2H6

B. CH2O and C4H6O

C. O2 and O3

D. C3H403 and C6H8O

+3
Answers (2)
  1. 29 October, 20:00
    0
    D is the correct answer
  2. 29 October, 22:18
    0
    The answer to your question is maybe letter D, but the last oxygen needs a number 6.

    Explanation:

    The empirical formula gives the actual elements that form part of a molecule but not the total numbers.

    The molecular formula gives the total number of atoms of each element in a molecule.

    We must factor the molecular formula to know if a formula is the empirical formula of that.

    A. CH₄ C₂H₆ = 2 (CH₃) these are not empirical molecular formulas

    B. CH₂O C₄H₆O these are not empirical-molecular formulas

    C. O₂ O₃ these are not empirical-molecular formulas

    D. C₃H₄O₃ C₆H₈O these are not empirical-molecular formulas

    the last oxygen needs a number 6 to be

    the answer.
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