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Scorching goIITian

Joined:	4 Jul 2008
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15 Apr 2009 11:17:09 IST

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241

number of moles of oxygen

None

A sample of Ammonium Phosphate,(NH₄)₃PO₄

Contains 6 moles of Hydrogen atoms.The no. of moles of oxygen atoms in the sample is:

a) 1

B)2

C)4

D)6

Ans-4

plzz xplain the process

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Comments (2)

vignesh the cooler version of newton

Blazing goIITian

Joined: 16 Mar 2008

Posts: 1801

15 Apr 2009 12:20:51 IST

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(NH4)3PO4 ..

in every molecule, there are 12 atoms of H and 4 atoms of O ...

so, for every atom of O, there are 3 atoms of H ..

i.e for every mole of O atom, there are 3 moles of H atom..

if 6 moles of H atom are present, then 2 moles of O atom shud be present...

so, answer is 2...

plzz correct me if wrong....

harsh

Scorching goIITian

Joined: 3 May 2008

Posts: 288

15 Apr 2009 22:53:00 IST

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yup ans is 2.......another proces..12 mol of hydrogen atom is there in 1 mole of (NH4)3PO4...6 MOL OF HYDROGEN ATOM WILL B IN 1/2 mol of (NH4)3PO4....1 mol of (NH4)3PO4 contains 4 mol of oxygen atom...1/2 mol contains 2 mol of O atom...thus ANS IS B...

CORRECT IF WRONG.......RATE IF SATISFIED.....!!!

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