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Chemistry
Chemistry
Problem
For which of the following substances, the standard heat of formation is zero ? (A)
C
(
graphite
)
C_{(\text{graphite})}
C
(
graphite
)
(B)
C
(
diamond
)
C_{(\text{diamond})}
C
(
diamond
)
(C)
CO
2
\text{CO}_2
CO
2
(D)
O
3
\text{O}_3
O
3
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