Home
Class 12
CHEMISTRY
A substance has a face centred cubic cry...

A substance has a face centred cubic crystal with a density `1.984` g `cm^(-3)` and edge length 630 pm. Calculate the molar mass of the substance

A

`98.63 g " mol"^(-1)`

B

`85.50 g " mol"^(-1)`

C

`74.70 g " mol"^(-1)`

D

`63.45 g " mol"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
Density `(rho)=(ZxxM)/(N_(0)xxa^(3))"or " M=(lxxN_(0)xxa^(3))/Z`
`M=(1.984xx6.022xx10^(23)xx(630xx10^(-10))^(3))/4`
`=74.70 g " mol"^(-1)`
Promotional Banner

Topper's Solved these Questions

  • SOLID STATE

    DINESH PUBLICATION|Exercise Select the correct|59 Videos

  • SOLID STATE

    DINESH PUBLICATION|Exercise comprehension|16 Videos

  • SOLID STATE

    DINESH PUBLICATION|Exercise ASSIGNMENT|134 Videos

  • REDOX REACTIONS

    DINESH PUBLICATION|Exercise Ultimate Preparation|9 Videos

  • SOLUTIONS

    DINESH PUBLICATION|Exercise ULTIMATE PREPARATORY PACKAGE|10 Videos

Similar Questions

Explore conceptually related problems

A substance forms face-centred cubic crystals. Its density is 1.984 g cm^(-3) and the edge length of the unit cell is 630 pm. Calculate the molar mass of the substance.

A substance which has face-centred cubic crystal has a density of 2.16 g cm^(-3) and the edge lenghtof the unit cell equal to 564 pm. The molar mass of the substanceis

A substance crystallizes in fcc structure. The unit cell edge length is 367.8pm. Calculate the molar mass of the substance if its density is 21.5 g//cm^3

What is the volume of a face centred cubic unit cell, when its density is 2.0 g cm^(-3) and the molar mass of the substance is 60.23 g mol^(-1) ?

An element crystallises as face-centred cubic lattice with density as 5.20 g//cm^(3) and edge length of the side of unit cell as 300pm. Calculate mass of the element which contains 3.01 xx 10^(24) atoms

A substance has density of 2 kg dm^(-3) and it crystallizes to fcc lattice with edge length equal to 700 pm . The molar mass of the substance is _______ .

Molybdenum forms body-centred cubic crystals whose density is 10.3 g cm^(-3) . Calculate the edge length of the unit cell. The molar mass of Mo is 95.94 g "mol"^(-1) .

DINESH PUBLICATION-SOLID STATE-multiple choice
  1. a metal crystallizes with a face-centered cubic lattice.The edge of th...

    Text Solution

    |

  2. Structure of a mixed oxide is cubic close packed the cubic unit cell o...

    Text Solution

    |

  3. The number of carbon atoms per unit cell of diamond unit cell is

    Text Solution

    |

  4. A metal has a fcc lattice.The edge length of the unit cell is 404 pm ,...

    Text Solution

    |

  5. If a is the length of the side of a cube, the distance between the bod...

    Text Solution

    |

  6. Density of a crystal is given by the formula

    Text Solution

    |

  7. Copper crystallises in fcc with a unit cell length of 361 pm. What is ...

    Text Solution

    |

  8. Lithium has a bcc structure .its density is 530Kgm^(-1) and its atomic...

    Text Solution

    |

  9. In calcium, fluoride having the florite structures. The coordination n...

    Text Solution

    |

  10. Which is the incorrect statement?

    Text Solution

    |

  11. Iron exhibits bcc structure at room temperatutre .Above 900^(@)C .it t...

    Text Solution

    |

  12. A substance has a face centred cubic crystal with a density 1.984 g cm...

    Text Solution

    |

  13. What colour is observed when ZnO is heated ?

    Text Solution

    |

  14. f-centre is

    Text Solution

    |

  15. The melting point of RbBr is 682^(@)C, while that of NaF is 988^(@)C ....

    Text Solution

    |

  16. Ferrous oxide has cubes structure and each edge of the unit cell is 5....

    Text Solution

    |

  17. Calculate the density of flourine nucleus supposing that the shape ...

    Text Solution

    |

  18. A mineral MX(2) crystallizes in ccp of M^(2+) ions whereas X^(-) ions ...

    Text Solution

    |

  19. A solid AB has NaCl type statement for ionic solids in which positive ...

    Text Solution

    |

  20. Which of the following statement are correct for the ionic solids in w...

    Text Solution

    |