How many atoms of each element are in the chemical formula #Ca(OH)_2#?

Answer 1

5

O and H each have 2 because the subscript 2 is outside the parenthesis, while Ca is 1 because there is no subscript.

#i.e. color(red)(1)Ca +color(red)(2)O+color(red)(2)H = 5 " atoms"#
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Answer 2

One calcium atom (Ca), two oxygen atoms (O), and two hydrogen atoms (H) make up the chemical formula Ca(OH)2.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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