Questions: Determine the number of atoms of each element present in Ca(OH)2.

Determine the number of atoms of each element present in Ca(OH)2.
Transcript text: Determine the number of atoms of each element present in $\mathrm{Ca}(\mathrm{OH})_{2}$.
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Solution

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Solution Steps

Step 1: Identify the chemical formula

The chemical formula given is $\mathrm{Ca}(\mathrm{OH})_{2}$.

Step 2: Determine the number of each type of atom in the formula
  • Calcium (Ca): There is 1 calcium atom.
  • Oxygen (O): The subscript outside the parentheses indicates that there are 2 hydroxide groups. Each hydroxide group contains 1 oxygen atom, so there are $2 \times 1 = 2$ oxygen atoms.
  • Hydrogen (H): Each hydroxide group also contains 1 hydrogen atom, so there are $2 \times 1 = 2$ hydrogen atoms.
Step 3: Match the findings with the given options
  • The correct option should state that there are 2 oxygen atoms and 2 hydrogen atoms for every 1 calcium atom.

Final Answer

\[ \boxed{\text{2 oxygen atoms and 2 hydrogen atoms for every calcium atom}} \]

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