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The number of water molecules in a drop ...

The number of water molecules in a drop of water weighing 5 mg is

A

`6.023 xx 10^(22)`

B

`3.0125 xx 10^(21)`

C

`1.67 xx 10^(20)`

D

`1.67xx 10^(21)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-STOICHIOMETRY-Objective Exercise -2
  1. One mole of CH(4) contains

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  2. The number of molecules in one litre of water is (density of water = 1...

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  3. The number of water molecules in a drop of water weighing 5 mg is

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  4. The mass of oxygen required to prepare 2 moles of water is

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  5. The ratio between the number of molecules in equal masses of CH(4) and...

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  6. The number of sulphur atoms present in 0.2 mole of sodium thiosulphate...

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  7. The number of nitrogen molecules present in lc.c of gas at NTP is

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  8. The density of water is 1g/mL. Assuming that there are no intermolecul...

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  9. Oridinary water contain one part of heavy water per 6000 parts of wate...

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  10. A gaseous mixture contains oxygen and nitrogen in the ratio 1:4 by wei...

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  11. An alpha-particle changes into a Helium atom. In the course of one yea...

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  12. The number of oxygen atoms present in 50 g of calcium carbonate is

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  13. The mixture containing the same number of molecules as that of 14 g of...

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  14. The number of atoms of hydrogen present in 1.5 mole of H(2)O is

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  15. Which of the following contains the maximum number of atoms?

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  16. Which contains more number of molecules?

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  17. Which of the following gases has the highest density under standard co...

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  18. Which of the following is heaviest?

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  19. The density of a gas is 2, relative to nitrogen, under the same condit...

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  20. The density of a gas at STP is 1.5 g/L. Its molecular weight is

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