Question 3.3.1: Consider the following chemical equation: MgCO3(s) + 2 HCl(a......

General Chemistry [1096778]

Consider the following chemical equation:

MgCO $_{3}$ (s) + 2 HCl(aq) → CO $_{2}$ (g) + MgCl $_{2}$ (aq) + H $_{2}$ O(ℓ)

a. Is CO $_{2}$ a reactant or a product in the reaction?
b. How many chlorine atoms are there in the reactants?
c. What is the physical state of H $_{2}$ O in this reaction?

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You are asked to answer questions about a chemical equation.
You are given a chemical equation.
a. Product. Chemical products are shown to the right of a reaction arrow.
b. Two. There is one chlorine atom in an HCl molecule. The stoichiometric coefficient to the left of HCl indicates that there are two HCl molecules, and thus two Cl atoms, in the reactants.
c. Liquid. The liquid physical state is indicated by the symbol (ℓ)

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