How many oxygen atoms are there in the product: 6Ca+4PO4→2Ca3(PO4)2? A. 16 B. 2 C. 4 D. 8

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Tringa0 Tringa0 · Answer 1 · 2019-07-24T14:05:02+02:00

Answer:

The correct answer is option A.

Explanation:

[tex]6Ca+4PO_4\rightarrow 2Ca_3(PO_4)_2[/tex]

Number of molecules of [tex]Ca_3(PO_4)_2[/tex] =2

In 1 molecule [tex]Ca_3(PO_4)_2[/tex] , there are 8 oxygen atoms:

[tex]4\times 2 = 8 [/tex]oxygen atoms.

Then 2 molecules of [tex]Ca_3(PO_4)_2[/tex] :

[tex]2\times 8 = 16[/tex] oxygen atoms.

Hence, the correct answer is option A.

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