Question

there are two binary compounds of mercury and oxygen. Heating 0.6498g of one of the compounds leaves a residue of 0.6018g of the other compound results in a mass loss of 0.016g . determibe the emorical formulka of each compound

Answer 1

The question is incomplete, here is its complete form:

There are two binary compounds of mercury and oxygen. Heating either of them results in the decomposition of the compound, with oxygen gas escaping into the atmosphere while leaving a residue of pure mercury. Heating 0.6498 g of one of the compounds leaves a residue of 0.6018 g. Heating 0.4172 g of the other compound results in a mass loss of 0.016 g. Determine the empirical formula of each compound.

Answer:

HgO and Hg2O

Explanation:

Let's start with the first compound. It is made of 0.6018 g mercury and 0.048 g oxygen which adds up to the 0.6498 g in the question

     Mercury                Oxygen

0.6018/200.59         0.048/16  [divide each mass by relative molar masses]

      0.003                    0.003    [then we divide both by 0.003]

          1                             1

Now we go to the second compound

     Mercury               Oxygen

0.4012/200.59         0.016/16  [divide each mass by relative molar masses]

      0.002                   0.001     [then we divide both by 0.001]

          2                           1