2Ag + H2S ➞ Ag2S + H2
According to the equation for this chemical reaction, what does the 2 in front of 2Ag tell us?
A)
Two atoms of silver are lost in this reaction.
B)
Two atoms of silver are produced by this reaction.
C)
Two atoms of silver are needed to complete the reaction.
D)
Two atoms of silver are gained to produce silver sulfide
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