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what is shown by this balanced chemical equation circle all that apply

H subscript2+Cl subscript2--->2HCl
the atoms in the original substances regroup and form a different substance
the product is a new substance made up of different atoms than the reactants
the total number of atoms changes the reaction
the same atoms are present before and after the reaction
matter is conserved

3 answers

In the balanced chemical equation \( \text{H}_2 + \text{Cl}_2 \rightarrow 2\text{HCl} \), we can analyze the statements provided regarding what is shown by this equation.

Let's evaluate each statement:

  1. The atoms in the original substances regroup and form a different substance: True. The hydrogen and chlorine atoms rearrange to create the new substance, hydrogen chloride (HCl).

  2. The product is a new substance made up of different atoms than the reactants: False. The product (HCl) is made up of the same atoms as the reactants (H and Cl); they are just rearranged.

  3. The total number of atoms changes the reaction: False. In a balanced chemical equation, the total number of atoms remains the same before and after the reaction.

  4. The same atoms are present before and after the reaction: True. The same hydrogen and chlorine atoms are present in both the reactants and the products.

  5. Matter is conserved: True. According to the law of conservation of mass, matter is conserved in a chemical reaction, which is shown in a balanced equation.

So, the statements that are true are:

  • The atoms in the original substances regroup and form a different substance.
  • The same atoms are present before and after the reaction.
  • Matter is conserved.

The correct responses to circle are the first, fourth, and fifth statements.

u sure

Yes, I can confirm the analysis of the statements regarding the balanced chemical equation \( \text{H}_2 + \text{Cl}_2 \rightarrow 2\text{HCl} \). Let's clarify each statement once more to ensure accuracy:

  1. The atoms in the original substances regroup and form a different substance:

    • True. The hydrogen (H) and chlorine (Cl) atoms rearrange to form hydrogen chloride (HCl), which is a new substance.

  2. The product is a new substance made up of different atoms than the reactants:

    • False. The product (HCl) consists of hydrogen and chlorine atoms, which are the same types of atoms present in the reactants \( \text{H}_2 \) and \( \text{Cl}_2 \). They are just combined in a different way.

  3. The total number of atoms changes the reaction:

    • False. The total number of atoms remains the same throughout the reaction. In this case, there are 2 H atoms and 2 Cl atoms before and after the reaction, so the total number of atoms does not change.

  4. The same atoms are present before and after the reaction:

    • True. The exact same types of atoms (H and Cl) are found in both the reactants and products, just arranged differently.

  5. Matter is conserved:

    • True. In accordance with the law of conservation of mass, the total mass (and thus the matter) remains constant before and after the reaction, which is supported by the balanced equation.

Given this review, the correct answers to circle in the context of what is shown by the balanced chemical equation are:

  • The atoms in the original substances regroup and form a different substance.
  • The same atoms are present before and after the reaction.
  • Matter is conserved.

Let me know if you have any more questions!