Question

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.

Explanation:

Step1: Analyze the chemical equation

In the chemical equation \(2Ag + H_2S
ightarrow Ag_2S + H_2\), the coefficient in front of a reactant indicates the amount of that reactant needed for the reaction.

Step2: Interpret the coefficient of \(Ag\)

The coefficient \(2\) in \(2Ag\) means that two atoms of silver (\(Ag\)) are required as reactants to complete the reaction.

Answer:

C. Two atoms of silver are needed to complete the reaction