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How many moles of magnesium phosphate, M...

How many moles of magnesium phosphate, `Mg_3(PO_4)_2` will contain 0.25 mole of oxygen atoms ?

A

0.02

B

`3.125 xx 10^(-2)`

C

`1.25 xx 10^(-2)`

D

`2.5 xx 10^(-2)`

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The correct Answer is:
B
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AAKASH SERIES-STOICHIOMETRY-Objective Exercise -2
  1. When KMnO4 acts as an oxidizing agent and ultimately forms MnO(4)^(2-)...

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  2. The value of n in the following equation if balanced Cr(2)O(7)^(3+)+14...

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  3. How many moles of magnesium phosphate, Mg3(PO4)2 will contain 0.25 mol...

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  4. What is the volume (lit) of oxygen required at STP to completely conve...

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  5. A copper plate of 20 cm x 10 cm is to be plated with silver of 1 mm th...

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  6. In the reaction MnO(4)^(-)+SO(3)^(2-)+H^(+)toMn^(2+)+SO(4)^(2-) the nu...

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  7. Number of moles of KMnO(4) required to oxidize one mole of Fe(C(2)O(4)...

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  8. How many moles of acidified FeSO(4) can be completely Oxidised by one ...

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  9. In the balanced chemical reaction, IO(3)^(-)+a I^(-)+ b H^(+) to c H(2...

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  10. Coefficients of MnO(4)^(-), C(2)O(4)^(2-) and H^(+) in the balanced re...

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  11. 5H(2)O(2)+xCl(2)O(2)+y OH^(-) to xCl^(-)+z O(2)+6H(2)O. In this reacti...

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  12. 1g of Mg is burnt in a vessel containing 0.5 g of oxygen. The remainin...

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  13. 25.5 g of H(2)O(2) solution on decomposition gave 1.68 L of O(2) at ST...

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  14. Balance the following chemcial reaction. MnO(4)^(-)+SO(3)^(2-)+H^(+)...

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  15. A gaseous alkane requires five times its volume of oxygen under the sa...

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  16. An alkane has C/H ratio (by mass) of 5.1428. Its molecular formula is

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  17. The percentage of nitrogen in Magnesium nitride is

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  18. The percentage of silica in sodium silicate is approximately (Si=28)

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  19. The element 'A' and 'B' combine together to give two compounds A(2) B(...

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  20. 10ml of an alkane on complete combustion gave 40ml of CO(2) under the ...

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