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Problem
Problem
Calcium reacts with water to produce hydrogen.
Ca
(
s
)
+
2
H
2
O
(
l
)
→
Ca
(
OH
)
2
(
aq
)
+
H
2
(
g
)
\text{Ca}(\text{s}) + 2\text{H}_2\text{O}(\text{l}) \rightarrow \text{Ca}(\text{OH})_2(\text{aq}) + \text{H}_2(\text{g})
Ca
(
s
)
+
2
H
2
O
(
l
)
→
Ca
(
OH
)
2
(
aq
)
+
H
2
(
g
)
Calculate the volume of hydrogen gas produced, at STP, when
0.200
g
0.200 \text{ g}
0.200
g
of calcium reacts completely with water.
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