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1.5 moles of oxygen atoms are present in...

1.5 moles of oxygen atoms are present in

A

0.5 moles of `BaCO_(3)`

B

1 mole of `BaCO_(3)`

C

2 moles of `BaCO_(3)`

D

0.25 moles of `BaCO_(3)`

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The correct Answer is:
A
`"0.5 mole of "BaCO_(3)" contains 1.5 moles of oxygen atoms"`
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NARAYNA-SOME BASIC CONCEPTS OF CHEMISTRY-EXERCISE - I (C.W)(MOLE CONCEPT ATOMIC MASS, MOLECULAR MASS, AVOGADRO NUMBER)
  1. Boron has two istopes B^(10) & B^(11) whose relative abundances are 20...

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  2. Which of the following has highest mass

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  3. 1.5 moles of oxygen atoms are present in

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  4. The number of atoms in 4.25 g of NH(3) is approximately

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  5. 12 gm of an alkaline earth metal gives 14.8 g of its nitride. The atom...

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  6. The isotopes of chlorine with mass numbers 35 and 37 exist in the rati...

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  7. The gas having same number of molecules as 16g of oxygen is

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  8. The weight of gaseous mixture containing 6.02xx10^(23) molecules of ni...

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  9. The density of a gas at S.T.P. is 1.40 grams per litre. The molecular ...

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  10. The no. of electrons present in one mole of Azide ion are (N3)^-1

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  11. If the mass of an electron is 9 xx 10^(-28) grams weight of one mole o...

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  12. If the weight of 5.6 litres of a gas at N.T.P. is 11 gram. The gas may...

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  13. Number of milli moles in 1.0 gram of water

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  14. Which of the following contains maximum number of molecules

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  15. A pair of gasses having same number of molecules are

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  16. The total volume of mixture of 2 gms of helium and 7 gms of nitrogen u...

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  17. The number of atoms present in 10 gms of CaCO(3) are

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  18. How many molecules are present in one in one gram of hydrogen?

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  19. The mass of 1.205 xx 10^(22) molecules of ammonia is

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  20. The total number of protons in 10g of calcium carbonate is (N(0) = 6.0...

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