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What is the correct answer?
4
At a given temperature and pressure 2 volumes of A combine with 5 volumes of B to form 2 volumes of C, and 1 volume of A combines with one volume of B to form 2 volumes of D. Then the formula of C is
A.
A
B
5
B.
A
5
B
2
C.
A
2
B
5
D.
A
B
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