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How many atoms are in one water molecule?

Answer 1

To count atoms in a molecule, add the subscripts of the molecule. Remember that if you do not see a subscript after a symbol, its subscript is 1. One molecule of water contains 3 atoms.

The molecular formula for water is #H_2O#, meaning there are 2 hydrogen atoms and one oxygen atom. I found this by adding the subscripts. 2 is the subscript on hydrogen, and 1 is the subscript on oxygen, so 2 + 1 = 3 atoms total.

For example, to count the number of atoms in one molecule of glucose, #C_6H_12O_6#, add the subscripts, so 6+12+6 is 24 atoms. Note that #C_6H_12O_6# is the molecular formula of glucose, not the empirical formula.

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Answer 2

Emilia Alcaraz

A water molecule consists of two hydrogen atoms and one oxygen atom, so there are three atoms in one water molecule.

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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.