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Problem
Problem
Which of the following processes are endothermic? I.
H
2
O
(
s
)
→
H
2
O
(
g
)
\text{H}_2\text{O}(\text{s}) \rightarrow \text{H}_2\text{O}(\text{g})
H
2
O
(
s
)
→
H
2
O
(
g
)
II.
CO
2
(
g
)
→
CO
2
(
s
)
\text{CO}_2(\text{g}) \rightarrow \text{CO}_2(\text{s})
CO
2
(
g
)
→
CO
2
(
s
)
III.
O
2
(
g
)
→
2
O
(
g
)
\text{O}_2(\text{g}) \rightarrow 2\text{O}(\text{g})
O
2
(
g
)
→
2
O
(
g
)
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