The symbol ?, used in visual chemical reactions, means that
A) the chemical reaction can go in either direction.
B) the concentration of the end products is the same as that of the reactants.
C) the substrates can become reactants and vice versa.
D) there is more end product than reactant.
E) input of energy is required.
A) the chemical reaction can go in either direction.
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Fill in the blank(s) with correct word
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