Home
Class 12
CHEMISTRY
Average atomic mass of magnesium is c...

Average atomic mass of magnesium is composed of 79 mole ` %` of `.^(24)Mg` and reamainig 21 mol `%` of `.^(25)Mg` and `.^(26)Mg`. Calculate mole `%` of `.^(26)Mg`.

A

5

B

20

C

10

D

15

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MOLE CONCEPT

    MOTION|Exercise EXERCISE - 2 (LEVEL - II)|17 Videos
  • MOLE CONCEPT

    MOTION|Exercise EXERCISE - 3|60 Videos
  • MOLE CONCEPT

    MOTION|Exercise EXERCISE - 1|64 Videos
  • METALLURGY

    MOTION|Exercise EXERCISE 4 (LEVEL - II)|17 Videos
  • NOMENCLATURE OF ORGANIC COMPOUNDS

    MOTION|Exercise PREVIOUS YEAR|8 Videos

Similar Questions

Explore conceptually related problems

Average atomic mass of magnesium is 24.31 amu. This magnesium is composed of 79 mole % of .^(24)Mg and reamainig 21 mol % of .^(25)Mg and .^(26)Mg . Calculate mole % of .^(26)Mg .

Average atomic mass of magnesium is 24.31 amu. This magnesium is composed of 79 mole % of 24mg and remaining 21 mole % of 25mg and 25mg . Calculate mole % of 26mg .

Calculate the mass in gm of 2g atom of Mg-

In magnesium sulphide, the ratio by mass of Mg and S is 3:4. What is the ratio of number of Mg and S atoms?

Calculate the mass in g of (a) 2 g -atom of Mg (b) 3N atoms of Mg .

MOTION-MOLE CONCEPT-EXERCISE - 2 (LEVEL - I)
  1. Calcualte the molecualr formula of compound which contains 20% Ca and ...

    Text Solution

    |

  2. The vapour density of a mixture of gas A (Molecular mass = 40) and gas...

    Text Solution

    |

  3. Average atomic mass of magnesium is composed of 79 mole % of .^(2...

    Text Solution

    |

  4. The moles of O(2) required for reacting with 6.8 gm of ammonia. (4NH...

    Text Solution

    |

  5. If one mole of ethanol (C(2)H(5)OH) completely burns to form carbon di...

    Text Solution

    |

  6. According to the following reaction the minimum quantity in gm of H(2)...

    Text Solution

    |

  7. The % loss in weight heating a pure sample of potassium chlorate (M. w...

    Text Solution

    |

  8. When 2.76 g of silver carbonate is strongly heated, it yields a residu...

    Text Solution

    |

  9. PH(3)(g) decomposes on heating to produce phosphorous and hydrogen. Th...

    Text Solution

    |

  10. The mass of 70% H(2)SO(4) required for neutralization of one mole of N...

    Text Solution

    |

  11. Calculate the amount of Ni needed in the Mond's process given below ...

    Text Solution

    |

  12. For the reaction 2x+3y+4z rarr 5w Initially if 1 mole of x, 3 mole...

    Text Solution

    |

  13. For the reaction 2A+3B+5C rarr 3D Initially if 2 mole of A, 4 mole...

    Text Solution

    |

  14. The minimum mass of mixture of A(2)" and "B(4) required to produce at ...

    Text Solution

    |

  15. A+BtoA3B2(unbalanced) A3B2+C to A3B2C2 (unbalanced) Above two reac...

    Text Solution

    |

  16. 0.05 mole of LiAlH4 in ether solution was placed in a flask containing...

    Text Solution

    |

  17. 21.6 g of silver coin is dissolved in HNO(3). When NaCl is added to th...

    Text Solution

    |

  18. Formation of polyethylene from calcium carbide takes place as follows ...

    Text Solution

    |

  19. Calculate the molarity of a solution containing 0.5 gm of NaOH dissolv...

    Text Solution

    |

  20. How many grams of NaOH will be needed to prepare 250 mL of 0.1 M solut...

    Text Solution

    |