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MAVERICK [17]
3 years ago
9

The total number of atoms represented by the formula Fe3(PO4)2 is

Chemistry
2 answers:
In-s [12.5K]3 years ago
8 0
C is the answer 3 + 2 +8 = 13
horsena [70]3 years ago
7 0

Answer:

C.

Explanation:

We have to keep in mind for this question that we have to take into account the <u>subscripts</u>.

Fe_3(PO_4)_2

The <u>subscript will affect only the number in the left</u>, so the first part would be:

Fe_3

In this part we will have 3 iron atoms. Then we will have:

(PO_4)_2

In the PO_4 we will have 1 atom of P and 4 atoms of O. (When we dont have any number as subscript we have to <u>assume that we have a "1</u>")

Then we have a "2" out side the the parenthesis (PO_4)_2, so we have to multiply by "2" all the <u>atoms inside the parenthesis</u>, so:

1 atom of P x 2 = 2

4 atoms of O x 2 = 8

So, in total we will have:

3 atoms of Fe + 8 atoms of O + 2 atoms of P = <u>13 atoms</u>

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