Home
Class 11
CHEMISTRY
A sample of impure air contains 80% N(2)...

A sample of impure air contains 80% `N_(2)`. 10% 5% `CO_(2)` and 5% Ar by volume. The average molecular weight of the sample is : [Ar=40]

A

29.4

B

29.8

C

30

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL EQUILIBRIUM

    GRB PUBLICATION|Exercise D.Le Chateliera principle|16 Videos

  • ISOMERISM

    GRB PUBLICATION|Exercise SUBJECTIVE TYPE|67 Videos

Similar Questions

Explore conceptually related problems

A sample of impure air contains 80% N_(2) , 10% O_(2) 5% CO_(2) and 5% Ar by volume. The average (At wt. of Ar = 40)

A gaseous mixture contains 40% O_(2), 40% N_(2), 10% CO_(2), 10% CH_(4) by volume. Calculate the vapour density of the gaseous mixture.

Atmospheric air has 78 % N_(2) , 21 % O_(2) , 0.9 % Ar and 0.1 % CO_(2) by volume. What is the molecular mass of air in the atmosphere ?

An impure sample of CaCO_(3) contains 38 % of Ca. The percentage of impurity present in the sample is :

Igniting MnO_(2) in air converts it quantitatively to Mn_(3)O_(4) . A sample of pyrolusite is of the following composition: MnO_(2) = 80% , SiO_(2) and other inert constituents = 15%, and rest bearing H_(2) O . The sample is ignited to constant weight. What is the percent of Mn in the ingnited sample?

An impure sample of calcium carbonate contains 80% pure calcium carbonate . 25 g of the impure sample reacted with excess of hydrochloric acid. Calculate the volume of carbon dioxide at NTP obtained from this sample.

GRB PUBLICATION-GASEOUS STATE-Exercise
  1. Equal masses of methane and oxygen are mixed in an empty container at ...

    Text Solution

    |

  2. N(2)+3H(2)rarr2NH(3). 1 mol N(2) and 4 mol H(2) are taken in 15L flask...

    Text Solution

    |

  3. A sample of impure air contains 80% N(2). 10% 5% CO(2) and 5% Ar by vo...

    Text Solution

    |

  4. The density of a gas A is twice that of a gas B at the same temperatur...

    Text Solution

    |

  5. A container consists of 1 mole of liquid water and 1 mole of N(2)(g), ...

    Text Solution

    |

  6. The vapour density of a aseous mixture of non-reactive gases 'A' and '...

    Text Solution

    |

  7. The partial pressure of hydrogen in a flask containing two grams of hy...

    Text Solution

    |

  8. Equal volume of two gases which do not react together are enclosed in ...

    Text Solution

    |

  9. What is the total pressure exerted by the mixture of 7.0g of N(2),2g ...

    Text Solution

    |

  10. A 40 mL of a mixture of H(2) and O(2) at 18^(@)C and 1 atm pressure wa...

    Text Solution

    |

  11. A gaseous mixture contains three gaseous A,B and C with a total number...

    Text Solution

    |

  12. For the reaction 2NH(2)(g)rarrN(2)(g)+3H(2)(g) What is the % of NH...

    Text Solution

    |

  13. 1 of NO(2) and 7//8 L of O(2) at the same temperature and pressure wer...

    Text Solution

    |

  14. A container contains O(2), He and SO(2) gases such that mass of SO(2) ...

    Text Solution

    |

  15. A cylinder is filled with a gaseous mixture containing equal masses of...

    Text Solution

    |

  16. Two glass bulbs A and B are connected by a very small tube having a st...

    Text Solution

    |

  17. A mixture of methane and ethane in the molar ratio of x:y has a mean m...

    Text Solution

    |

  18. 2 litres of moist hydrogen were collected over water at 26^(@)C at a t...

    Text Solution

    |

  19. In two different vessels X andY, H(2)O(l) is kept at the same temperat...

    Text Solution

    |

  20. A sample of H(2) is collected over H(2)O at 23^(@)C and a pressure of ...

    Text Solution

    |