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Mass of 1 molecule .of NH(3) is....

Mass of 1 molecule .of `NH_(3)` is__________.

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OMEGA PUBLICATION-SAMPLE QUESTION PAPER -III (PUNJAB)-QUESTION
  1. Which of the two, molarity and molality, is better to express concentr...

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  2. State first law of Thermodynamics. Give its mathematical form.

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  3. Mass of 1 molecule .of NH(3) is.

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  4. What is the oxidation state of Cr in K(2)Cr0(3)

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  5. Explain Pauli’s exclusion principle.

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  6. Give two characteristics of homologous series.

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  7. If a plant has fibrous root then what kind of venation does its leaves...

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  8. What is screening effect ?

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  9. Define empirical formula.

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  10. Calculate mass of 10^20 atoms of oxygen.

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  11. What raw materials are needed for a plant to get the process of photos...

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  12. Explain why: Al utensils should not be kept in water over night.

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  13. Explain why Al wire is used to make transmission cables.

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  14. Distinguish between classical and photochemical smogs.

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  15. Define disproportionisation and simple displacement redox reactions.

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  16. Why do aldehydes and ketones have high dipole moments?

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  17. C Cl4 is not hydrolysed but SiCl4 can be hydrolysed with water. Why ?

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  18. Derive van der Waals’ equation of State for n moles of gas.'

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  19. Calculate the kinetic energy of 0.2 g of H2 at 27^@C.

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  20. Calculate enthalpy of the reaction : 4NH3(g) +3O2(g) rarr 2N2(g)+ 6H2O...

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