Question

a sample of ammonium phosphate (NH4)3PO4 contains 3.18 mole of hydrogen atoms. The no. of moles of oxygen atoms in the given sample is

Answer 1

Answer:

I hope you understand this solution

Answer 2

Given :

a sample of ammonium phosphate (NH4)3PO4 contains 3.18 mole of hydrogen atoms.

To Find :

The no. of moles of oxygen atoms in the given sample.

Explanation:

149gm of $(NH_{4} )_{3}PO_{4}$contains 12g of H.

For 3.18 moles of H i.e. 3.18g of H,

3.18gm of H present in

149×3.18​/12=39.5gm $(NH_{4} )_{3}PO_{4}$.

149gm of $(NH_{4} )_{3}PO_{4}$ contains 64g of Oxygen.

∴ 39.5gm of $(NH_{4} )_{3}PO_{4}$ will contain 64×39.5/149​g oxygen.

                                                               =16.96 gm oxygen

i.e. 16.96g oxygen present in the sample.

∴ No. of moles of oxygen=16.96/16​=1.06 moles.

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