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The molecular mass of benzene is 78 and ...

The molecular mass of benzene is 78 and its percentage composition is 92.3 C and 7.69 H. Determine the molecular formula of benzene?

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V PUBLICATION-SOME BASIC CONCEPTS OF CHEMISTRY-QUESTION BANK
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  2. Calculate the volume of 34 g of 'NH3' at STP?

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  3. The molecular mass of benzene is 78 and its percentage composition is ...

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  4. A compound contains 4.07% hydrogen, 24.27% carbon and 71.65% chlorine....

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  5. Calculate the percentage composition of calcium nitrate (Ca(NO3)2).

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  6. 1.0 g of Mg is burnt in a closed vessel which contains 0.5 g of O2 . W...

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  7. A solution is prepared by dissolving 4 g of NaOH to give 500 ml of it....

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  8. What is the molality of a solution which contians 36 g of glucose '(C6...

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  9. The molecular mass of an organic compound is 78 and its composition i...

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  10. What is the different between the following. (i) 2.5 xx 10^3 g and 2....

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  11. Calculate the number of moles of O2 required to produce 240 g of Mgo ...

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  12. State the number of significant figures in each of the following numbe...

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  13. In the commercial manufacture of nitric acid, how many moles of NO2 pr...

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  14. The number of molecules in 4.25 g of ammonia is approximately

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  15. The number of molecules in 32 g of oxygen is 3.2xx10^(16), 6.0xx10^(2...

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  16. One mole of 'CO2' contains

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  17. Number of atoms is 1.4 g nitrogen is,

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  18. Which has maximum number of atoms?

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  19. The empirical formula of sucrose is : CH2 O, CHO, C12 H22 O11, C(H2O2)

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  20. One mole of helium gas represents. 6.022xx10^23 He, 6.022xx10^23 He...

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