Calculate how much oxygen can be obtained by decomposition of 43.4 g of mercury oxide (2)
| September 10, 2021 | education
Mercury oxide decomposes as follows:
2HgO = 2Hg + O2.
The molar mass of HgO is 216 g / mol and the molar mass of O2 is 32 g / mol. It follows that from 2 * 216 g of HgO 32 g of O2 is formed.
According to the proportion:
2 * 216g – 32g
43.4 g – x g,
we find that x = 3.2 g, that is, when 43.4 g of mercury oxide is decomposed, 3.2 g of oxygen are formed.
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