Home
Class 12
CHEMISTRY
The half life period of uranium is 4.5 b...

The half life period of uranium is 4.5 billion years. After 9.0 billion years, the number of moles of heliumm liberated from the following nuclear reaction will be:
`._(92)^(238)U to ._(90)^(234)Th + ._(2)^(4)He`
Initially there was I mole uranium.

A

0.75 mol

B

1.0 mol

C

11.2 mol

D

22.4 mol

Text Solution

Verified by Experts

The correct Answer is:
a
Promotional Banner

Topper's Solved these Questions

  • RADIOACTIVITY AND NUCLEAR TRANSFORMATION

    OP TANDON|Exercise OBJ - B|54 Videos

  • RADIOACTIVITY AND NUCLEAR TRANSFORMATION

    OP TANDON|Exercise Assettion Reason|26 Videos

  • RADIOACTIVITY AND NUCLEAR TRANSFORMATION

    OP TANDON|Exercise Problem Practices|44 Videos

  • ORGANIC COMPOUNDS CONTAINING NITROGEN

    OP TANDON|Exercise Single integer|8 Videos

  • SATURATED ALIPHATIC HYDROCARBONS

    OP TANDON|Exercise SINGLE INTEGER ANSWER TYPE QUESTIONS|7 Videos

Similar Questions

Explore conceptually related problems

In the nuclear reaction ""_(92)U^(238) to ""_(z)Th^(A) + ""_(2)He^(4) , the values of A and Z are

(a) On analysis a sample of uranium ore was found to contian 0.277g of ._(82)Pb^(206) and 1.667g of ._(92)Pb^(206) and 1.667g of ._(92)U^(238) . The half life period of U^(238) is 4.51xx10^(9) year. IF all the lead were assumed to have come from decay of ._(92)U^(238) , What is the age of earth? (b) An ore of ._(92)U^(238) is found to contain ._(92)U^(238) and ._(82)Pb^(206) in the weight ratio of 1: 0.1 The half-life period of ._(92)U^(238) is 4.5xx10^(9) year. Caluculate the age of ore.

Find the kinetic energy of emitted a-particles in the following nuclear reaction: ""_(94)Pu^(238) to ""_(92)U^(234) + ""_(2)He^(4) m(Pu^(238)) = 238.04954 amu m(U^(234)) = 234.04096 amu m(""_(2)He^(4)) = 4.002603 amu

In the nuclear reaction ._92 U^238 rarr ._z Th^A + ._2He^4 , the values of A and Z are.

._(92)U^(238) is radioactive and it emits alpha and beta particles to form ._(82)Pb^(206). Calculate the number of alpha and beta particles emitted in this conversion. An ore of ._(92)U^(238) is found ot contain ._(92)U^(238) and _(82)Pb^(206) in the weight ratio of 1: 0.1. The half- life -period of ._(92)U^(238) is 4.5xx 10^(9) yr. Calculate the age of the ore.

The half life of ._92^238U undergoing alpha -decay is 4.5xx10^9 years. The activity of 1 g sample of ._92^238U is

OP TANDON-RADIOACTIVITY AND NUCLEAR TRANSFORMATION -OBJ - A
  1. An artifical transmutation was carried out on .(7)^(14)N by an alpha-p...

    Text Solution

    |

  2. If 0.4 curie be the activity of 1 gram of radioactive samples whose at...

    Text Solution

    |

  3. The half life period of uranium is 4.5 billion years. After 9.0 billio...

    Text Solution

    |

  4. Bombardment of aluminium by alpha-"particle" leads to its artificial d...

    Text Solution

    |

  5. A radioactive nucleus A has a single decay mode with half life tau(A)....

    Text Solution

    |

  6. When a nucleus in an atom undergoes a radioactive decay, the electroni...

    Text Solution

    |

  7. Half - lives of two radioactive . Initially . The samples have equal n...

    Text Solution

    |

  8. A radioactive element is preset in VIII group of the periodic table. I...

    Text Solution

    |

  9. Which statement is true about n/p ratio?

    Text Solution

    |

  10. How many alpha and beta particles should be eliminated so that an isod...

    Text Solution

    |

  11. which of the following are used as control rods in a nuclear reacto ?

    Text Solution

    |

  12. Which of the following notation shows the product incorrectly?

    Text Solution

    |

  13. Which is ture about decay constant (lambda)?

    Text Solution

    |

  14. Which of the following is not correct?

    Text Solution

    |

  15. Correct order of radioactivity is:

    Text Solution

    |

  16. At radioactive equilibrium, the ratio between two atoms of radioactive...

    Text Solution

    |

  17. In the sequence of the following nuclear reaction, X(98)^(238) overs...

    Text Solution

    |

  18. Co^(60) has half-life of 5.3 years. Find the number of half-lives for...

    Text Solution

    |

  19. Which of the following "is"//"are" correct? a)alpha-rays are more pene...

    Text Solution

    |

  20. Select the wrong statement:

    Text Solution

    |