Question

a compound contains 32 grams of O for every 2.0 grams of H. What is the most likely molecular formula of this compound?

Answer 1

Answer:

H₂O₂

Explanation:

The molecular formula gives the exact number of atoms within a chemical compound.

In this problem:

Mass of O  = 32g

Mass of H = 2g

  Let us follow this methodical approach to solve the problem:

Elements                                  O                                       H

Mass                                         32                                      2

Molar mass                               16                                       1

Number of moles                  32/16                                     2/1        

                                                  2                                         2

The molecular formula of the compound is H₂O₂