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Problem
Pure oxygen gas was first prepared by heating mercury(II) oxide, HgO.
2
HgO
(
s
)
→
2
Hg
(
l
)
+
O
2
(
g
)
2\text{HgO}(\text{s}) \rightarrow 2\text{Hg}(\text{l}) + \text{O}_2(\text{g})
2
HgO
(
s
)
→
2
Hg
(
l
)
+
O
2
(
g
)
What volume of oxygen, at STP, is released by heating
12.45
g
12.45 \text{ g}
12.45
g
of HgO?
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