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Match the following columns...

Match the following columns

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A, B, C, D
`overset(+3)(Cr)overset(-1)(I_(3)) rarr overset(+6)(Cr_(2)) O_(7)^(2-) +overset(+7)(I)O_(4)^(-)`
`overset(+2)(Fe)(SCN)_(2) rarr Fe^(3+) +SO_(4)^(-2) +CO_(3)^(2-) +NO_(3)^(-)`
`NH_(4)SCN rarr SO_(4)^(-2) +CO_(3)^(2-) +NO_(3)^(-)`
`AS_(2)S_(3) rarr AsO_(4)^(-3) +SO_(4)^(-2)`
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NARAYNA-SOME BASIC CONCEPTS IN CHEMISTRY STOICHIOMETRY (PART-I)-All Questions
  1. Match the following columns

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  2. Add 6.65 10^(4) and 8.95'10^(3).

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  3. Report tha answer to correct singificant figures in 2.5' 1.25

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  4. Two oxides of metal M have 27.6% and 30% oxygen by weight. If the form...

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  5. If dry air is considered to have only nitrogen and oxygen and is found...

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  6. No . of gram atoms in 1kg of Helium

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  7. No of gram atoms in 12.044 xx 10^(23) Na atoms

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  8. Mass of one hydrogen atom

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  9. No of atoms in 4 gram of calcium

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  10. No of molecules in 2.2 grams of Co(2)

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  11. The volume occupied by 35.5g of CI(2) at S.T.P.

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  12. Calculate the no. of moles in 0.72 grams of glucose ?

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  13. Calculate weight of 0.1 moles of Na(2)CO(3)?

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  14. Calculate the number of moles in 5.6 lit of methane at STP ?

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  15. Calculate weight of 3.011 xx 10^(23) molecules of SO(2)?

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  16. Calculate the number of molecules in 1120 ml of hydrogen at STP?

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  17. What is the ratio of number of molecules, if tha mass ratio of N(2) an...

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  18. Equivalent weight of sulphate ion and bicarbonate ion :

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  19. H(2)SO(4)+NaOH rarr NaHSO(4)+H(2)O In this equation the equivalent wei...

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  20. H(2)SO(4)+2NaOH rarr Na(2)SO(4) +2H(2)O In this equation the equivalen...

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  21. Mg(OH)(2)+HCI rarr Mg(OH)CI +H(2)O In this reaction, the equivalent ...

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