A sample of ammonium phosphate contains 3.18 moles of hydrogen atoms. The no. of moles of oxygen atoms in the sample is
a. 0.265
b. 0795
c. 1.06
d. 4.00
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Answer: Formula of ammonium sulphate is (NH4)3 PO4 12 mole of H atoms are present in 1 mole (NH4)3 PO4Therefore 3.18 mole of H atoms are present in 0.265 mole (NH4)3 PO4 1 mole (NH4)3 PO4 contains 4 mole of oxygen atomsTherefore 0.265 mole (NH4)3 PO4 contains 1.06 mole of oxygen atoms
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