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Find the mass of 7 xx 10^(20) molecules ...

Find the mass of `7 xx 10^(20)` molecules of `H_2`gas.

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The correct Answer is:
`2.32 xx 10^(-3)`
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AAKASH SERIES-STATES OF MATTER-SUBJECTIVE EXERCISE - 1 (NUMERICALS)
  1. Calculate the density of carbon dioxide at 97° C and 760 mm of Hg of p...

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  2. A five litre flask contains 3.5gm of N2 3g of H2 and 8g of O2 at 27^@C...

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  3. Find the mass of 7 xx 10^(20) molecules of H2gas.

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  4. The volume of a given mass of gas is 0.6dm^3. If its pressure is incre...

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  5. Find the volume of 8g of oxygen gas at 27^@C and 1 atmosphere prressur...

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  6. Find the mass of 450cm^3 of N2 gas at 32^@C and 750mm of Hg pressure.

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  7. 2.5gms. of a gas is present in 750ml. flask at 32^@C and 770mm, of Hg ...

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  8. A flask contains 1.2 inoles of methane gas at 25^@C and 74.6mm pressur...

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  9. A 15 dm^(3) cylinder contains hydroen gas at 5 atm at 27^(@)C, How ma...

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  10. 3.2g of a gas occupies 550 cc of volume at 22^@C and 770 mm of Hg pres...

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  11. Ammonia gas diffuses through a fine hole at the rate 0.5 lit min^-1. U...

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  12. If oxygen diffuses at a rate of 6cm^(3),"sec"^(-1) through a fine hole...

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  13. Find the relative rates of diffusion of CO2 and Cl2 gases.

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  14. Two gases have densities 0.388g/cc and 0.097gm/cc. If the second gas h...

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  15. 100cc of CO2 gas is diffused in 25 seconds through a porous membrane. ...

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  16. Certain volume of oxygen gas undergoes effusion in 15 min. Under simil...

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  17. If 150cc of CO effused in 25 seconds, what volume of methane would eff...

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  18. A porous tube containing a mixture of H2 and O2 is placed in a flask. ...

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  19. 240cc of SO2 gas diffused through a porous membrane in 20 minutes. Und...

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  20. Carbon dioxide and another gas 'X' have their rates of diffusion as 0....

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