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Give an example of a tetra-atomic elemen...

Give an example of a tetra-atomic element and calculate its molecular mass.

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Tetra-atomic element: `P_(4)`
molecular mass of `P_(4)`=atomic mass of `Pxx` its atomicity
=`31xx4=124`
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CHHAYA PUBLICATION-SOME BASIC CONCEPTS OF CHEMISTRY-WARM UP EXERCISE
  1. Define molecular mass according to modern scale.

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  2. The molecular mass of sodium chloride is 58.5'. Comment on this statem...

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  3. Give an example of a tetra-atomic element and calculate its molecular ...

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  4. Define formula mass.

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  5. Molecular mass and formula mass are not always synonymous-explain.

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  6. 1g mole oxygen=2 gram-atom oxygen'-justify.

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  7. which one is the volume of 2.8g of ethylene gas at STP? (i) 2.24 L ...

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  8. Which one is the volume of 1g of oxygen gas at STP? (i) 0.7 L (ii)...

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  9. Is the statement correct or incorrect- 35.5g of chlorine contains 6.02...

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  10. Calculate the number of molecules in 0.52g of acetylene.

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  11. Find the number of molecules in 1 millimole of CO(2).

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  12. Calculate the number of O-atoms in 0.5 mol of SO(2).

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  13. Calculate the mass of 1 mol of electrons if the mass of one electron b...

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  14. At a temperature of 273K and 1 atm pressure 1L of a gas weighs 2.054g....

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  15. At same temperature & pressure two flasks of equal volume contain NH(3...

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  16. Give the definitions of normal density and vapour density of gaseous s...

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  17. Establish a relation between molecular mass and vapour density of gase...

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  18. Show that the volume of 1 gram-molecule of any gas at 273K temperature...

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  19. Calculate the volume occupied by 1 molecule of any gaseous substance a...

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  20. Choose the correct options: The vapour density of carbon dioxide is -(...

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