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A chemical reaction is at equilibrium. Compared to the rate of the forward reaction, the rate of the reverse reaction is
a
faster and more reactant is produced
D
faster and more product is produced
С
the same and the reaction has stopped
d
the same and the reaction continues in both directions
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2b2t

explanation:

2b2t

the right answer is c i just did the question.

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.