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2 moles of H(2)SO(4) is kept in a beaker...


2 moles of `H_(2)SO_(4)` is kept in a beaker. Find
(i) Moles of H-atoms
(ii) Moles of S-atoms
(iii) Moles of O-atoms
(iv) Number of O-atoms

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The correct Answer is:
`(##ALN_NC_CHM_MC_E01_003_A01##)`
(i) 4 (ii) 2 (iii) 8 (iv) `8N_(4)`
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The number of carbon atoms in exactly 12 g C^(12) is called Avogadro's number , N_(A) (6.022 xx 10^(23)) . One mole is the amount of material which contains Avogradro's number of particle. These definitions emphasize that the mole refers to a fixed number of NA^(+) b Avogadro's number of atoms , electrons to refer to a mole of helium , a mole of electrons , or a mole of NA^(+) by Avogadro's number of atoms, electrons or ions respectively. On the other hand, phrases like "one mole of hydrogen" can be ambiguous , and should be restated as "one mole of hydroden atoms" or " one mole fo hydrogen molecules." But it is a matter of common practice among chemists , however , to let the name of the element stand for its mos common form. Thus one mole of O_(2) is frequently referred to as one mole of oxygen , whereas one moles of O is called one mole of oxygen atoms. Suppose if we take one mole molecules fo H_(2)SO_(4) then it contain 2 moles of H atom 1 mole of S atom and 4 moles of O atom. It can also be said that moles of oxygen molecules is (4)/(2) =2 mole. If a sample of CuSO_(4).5H_(2)O contains 3 moles of oxygen molecules , then fo H-atom present in the sample is :

The number of carbon atoms in exactly 12 g C^(12) is called Avogadro's number , N_(A) (6.022 xx 10^(23)) . One mole is the amount of material which contains Avogradro's number of particle. These definitions emphasize that the mole refers to a fixed number of NA^(+) b Avogadro's number of atoms , electrons to refer to a mole of helium , a mole of electrons , or a mole of NA^(+) by Avogadro's number of atoms, electrons or ions respectively. On the other hand, phrases like "one mole of hydrogen" can be ambiguous , and should be restated as "one mole of hydroden atoms" or " one mole fo hydrogen molecules." But it is a matter of common practice among chemists , however , to let the name of the element stand for its mos common form. Thus one mole of O_(2) is frequently referred to as one mole of oxygen , whereas one moles of O is called one mole of oxygen atoms. Suppose if we take one mole molecules fo H_(2)SO_(4) then it contain 2 moles of H atom 1 mole of S atom and 4 moles of O atom. It can also be said that moles of oxygen molecules is (4)/(2) =2 mole. Sulphur exists in different allotropic forms like S_(2) S_(6) 'and" S_(8) etc. If equal weight of these three ar taken in separate containers , then the ratio of number of atoms present in them is :

The number of carbon atoms in exactly 12 g C^(12) is called Avogadro's number , N_(A) (6.022 xx 10^(23)) . One mole is the amount of material which contains Avogradro's number of particle. These definitions emphasize that the mole refers to a fixed number of NA^(+) b Avogadro's number of atoms , electrons to refer to a mole of helium , a mole of electrons , or a mole of NA^(+) by Avogadro's number of atoms, electrons or ions respectively. On the other hand, phrases like "one mole of hydrogen" can be ambiguous , and should be restated as "one mole of hydroden atoms" or " one mole fo hydrogen molecules." But it is a matter of common practice among chemists , however , to let the name of the element stand for its mos common form. Thus one mole of O_(2) is frequently referred to as one mole of oxygen , whereas one moles of O is called one mole of oxygen atoms. Suppose if we take one mole molecules fo H_(2)SO_(4) then it contain 2 moles of H atom 1 mole of S atom and 4 moles of O atom. It can also be said that moles of oxygen molecules is (4)/(2) =2 mole. According to common practise , if you have Avogadro number of hydrogen molecules, then its mass is equal to :

The number of carbon atoms in exactly 12 g C^(12) is called Avogadro's number , N_(A) (6.022 xx 10^(23)) . One mole is the amount of material which contains Avogradro's number of particle. These definitions emphasize that the mole refers to a fixed number of NA^(+) b Avogadro's number of atoms , electrons to refer to a mole of helium , a mole of electrons , or a mole of NA^(+) by Avogadro's number of atoms, electrons or ions respectively. On the other hand, phrases like "one mole of hydrogen" can be ambiguous , and should be restated as "one mole of hydroden atoms" or " one mole fo hydrogen molecules." But it is a matter of common practice among chemists , however , to let the name of the element stand for its mos common form. Thus one mole of O_(2) is frequently referred to as one mole of oxygen , whereas one moles of O is called one mole of oxygen atoms. Suppose if we take one mole molecules fo H_(2)SO_(4) then it contain 2 moles of H atom 1 mole of S atom and 4 moles of O atom. It can also be said that moles of oxygen molecules is (4)/(2) =2 mole. From a mixture of 4 moles Ca_(3)(PO_(4))_(2) , 5 moles of p_(4)O_(10) and 6 moles of H_(3)PO_(3) , all the phosphourus atoms are removed . Then moles of P_(4) molecules formed from all these atoms are:

In three moles of ethane (C_(2)H_(6)) , calculate the following: (i) Number of moles of carbon atoms. (ii) Number of moles of hydrogen atoms. (iii) Number of molecules of ethane.

ALLEN-MOLE CONCEPT-Basic Exercise
  1. A box contains 12xx10^(22) number of oxygen atoms. Find moles of O-ato...

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  2. If a closed container contain 5 moles of CO(2) gas, then find total nu...

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  3. 2 moles of H(2)SO(4) is kept in a beaker. Find (i) Moles of H-atoms ...

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  4. A flask contains 16 gm helium (""(2)^(4)He) gas (Gram atomic mass of H...

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  5. 6.4 gm of SO(2) will contain how many (i) Moles of SO(2) molecules ...

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  6. What is the mass of one CO(2) molecules in gm?

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  7. A glass contains 36 ml of liquid water (density =1 gm/ml). Find (i)...

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  8. Glycine (H(2)N-CH(2)-COOH) is one of the proteinogenic amino acid. Fin...

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  9. A flask of 8.21 litre contains CH(4) gas at a pressure of 2 atm. Find ...

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  10. Find moles of O-atoms in 5.6 litres of SO(3) at 0^(@)C ,1 atm ?

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  11. How many atoms are there in 5 moles of silver (N(A)=6xx10^(23))

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  12. How many moles of O-atoms are there in 1 mole CaCO(3)

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  13. How many moles of O-atoms are in 2.7xx10^(25) molecules of CO(2) (N(A)...

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  14. Find number of O-atoms in 1 moles O(2)

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  15. Find moles of Cu atom and number of Cu atoms in it's 0.635 gm

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  16. Find number of molecules in 11.35 litres SO(2) gas at STP.

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  17. 2NH(3) to N(2) + 3H(2) Find moles of H(2) produced from 4 moles of ...

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  18. CaCO(3) + 2HCl to CaCl(2) + H(2)O + H(2)O + CO(2) 0.2 mole CaCO(3) i...

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  19. NH(3)C"OO"NH(4) overset(Delta)to 2NH(3) + CO(2) If 6 moles of NH(3) i...

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  20. KClO(3) to KCl + O(2)(unbalanced), If in above reaction 5 moles of K...

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