dStr0anVioledo
Answered

What do the symbols in parenthesis indicate?

CaCl2(aq) + 2AgNO3(aq)) d Ca(NOÀ)2(aq) + 2AgCl(s)

1.the catalyst used in the reaction

  1. the number of atoms of each reactant and product
  2. the physical state of each reactant and product
  3. the number of units of each reactant and product

Verified Answer :

Greenleafable

The symbols in parentheses indicate 3. the physical state of each reactant and product.
(aq) means aqueous, or liquid state, and (s) means solid state.
2 and 4 are definitely incorrect because there are no numbers in the parentheses. 

Answer:

Answer:

The symbol in the parenthesis indicate (C) the physical state of each reactant and product

Explanation:

There are symbols used to represent the physical state of a reactant or product, the most common being (s) for solid, (l) for liquid, (g) for gas, and (aq) for aqueous, or water like. Precipitate is also considered a physical state and is represented by a downward-facing arrow. In this case, the only symbols used in the chemical equation are (aq) and (s). Therefore, C is the correct answer.

\(CaCl_{2(aq)} + 2AgNO_{3(aq)}\) → \(Ca(NO_{3})_{2(aq)} + 2AgCl_{(s)}\)

The other answers:

A. the catalyst used in the reaction

Because it is neither a reactant nor a product, a catalyst is shown in a chemical equation by being written above the yield arrow. The yield arrow is what would be the equals sign in a normal equation.

B.  the number of atoms of each reactant and product

These are represented by the subscripts. In the given chemical equation, these numbers are 2, 3, 3, and 2 (left to right).

Dthe number of units of each reactant and product

These are represented by the coefficients. In the given chemical equation, these numbers are 1, 2, 1, and 2 (left to right). The ones are implied, so there's no need to write them down.

I hope this helps!

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