What is the total number of atoms of oxygen in the formula Al(ClO3)3 . 6H2O?

In , there are 15 atoms of the Oxygen are present.

, tree oxygen present inside the bracket will be multiplied by three. Hence, there are 9 atoms of Oxygen is present.

Water contains 1 oxygen atom per molecule. Here 6 molecules are present. Hence, there are 6 Oxygen present.

So, the total number of Oxygen atoms = 9+ 6 = 15

Therefore, there are 15 Oxygen atoms are present in the  .

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9.03×10²⁴ atoms of O are in the Al(ClO₃)₃ · 6H₂O

Explanation:

We begin from this statement:

1 mol of anything has x moles of the elements and the x moles are the supscripts for example:

1 mol of H₂O has 2 moles of H and 1 mol of O

1 mol of H₂SO₄ has 2 moles of H, 1 mol of S and 4 moles of O

Therefore, in 1 mol of Al(ClO₃)₃ · 6H₂O we may have 15 moles of O

9moles in the chlorate and 6 moles from the water.

Al(ClO₃)₃ · 6H₂O is named as Aluminum chlorate hexahydrate

To determine the number of atoms we make this rule of three:

1 mol of O has 6.02×10²³ atoms (NA)

15 moles of O must have 15 . NA / 1 = 9.03×10²⁴ atoms of O

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