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AlexFokin [52]
3 years ago
12

Please help,i really need this!!!

Chemistry
2 answers:
lana [24]3 years ago
6 0

Answer: Option (A) is the correct answer.

Explanation:

When calcium reacts with potassium chloride then  it results in the formation of calcium oxide and potassium ions.

The given equation is as follows.

     Ca(s) + KCl \rightarrow CaCl_{2}(s) + K^{+}

Number of atoms on reactant side are as follows.

  • Ca = 1
  • K = 1
  • Cl = 1

Number of atoms on product side are as follows.

  • Ca = 1
  • K = 1
  • Cl = 2

To balance the given equation, multiply KCl by 2 on the reactant side and multiply potassium ions by 2 on product side. Therefore, balanced chemical equation will be as follows.

        Ca(s) + 2KCl \rightarrow CaCl_{2}(s) + 2K^{+}

Makovka662 [10]3 years ago
5 0

A because KCL 2 and K + CL cancel out and Both of the Ca cancel each other out

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A sample of sodium reacts completely with 0.497 kg of chlorine, forming 819 g of sodium chloride. what mass of sodium reacted?
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Answer:

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