An oxide of mercury will thermally decompose when heated. A 0.204 gram sample of the mercury oxide is decomposed to yield 0.189 grams of elemental mercury. What is the empirical formula of the mercury oxide

Explanation:

Hello,

In this case, by knowing the mass of the oxide and the mass of the element mercury, one obtains its percentage as follows:

Consequently, oxygen's percentage is:

Now, the moles of each element for a 100-g sample:

In such a way, the subscripts in the formula are given by:

Therefore, the empirical formula turns out:

Best regards.

the answer is either b or c

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