Home
Class 9
CHEMISTRY
Calculate the molecular masses of the fo...

Calculate the molecular masses of the following compounds :
(a) Hydrogen sulphide, `H_(2)S` , (b) Carbon disulphide, `CS_(2)`
(Atomic masses : `H = 1 u , S = 32 u , C = 12 u`)

Text Solution

Verified by Experts

The correct Answer is:
(a) 34 u , (b) 76 u
Promotional Banner

Topper's Solved these Questions

  • ATOMS AND MOLECULES

    LAKHMIR SINGH & MANJIT KAUR|Exercise Exercise|205 Videos

  • IS MATTER AROUND US PURE

    LAKHMIR SINGH & MANJIT KAUR|Exercise NCERT BOOK PAGE 24|1 Videos

Similar Questions

Explore conceptually related problems

Calculate the molecular masses of the following compounds : (a) Methane, CH_(4) , (b) Ethane, C_(2)H_(6) , (c ) Ethane, C_(2)H_(4) , (d) Ethyne, C_(2)H_(2) (Atomic masses: C = 12 u , H = 1 u )

(a) Define 'formula unit' of an ionic compound. What is the formula unit of (i) sodium chloride, and (ii) magnesium chloride ? (b) Calculate the formula masses of the following compounds : (i) Calcium chloride , (ii) Sodium carbonate (Given : Atomic masses : Ca = 40 u , Cl = 35.5 u , Na = 23 u , C = 12 u , O = 16 u )

Convert 22 g of carbon dioxide (CO_(2)) into moles. (Atomic masses : C = 12 u, O = 16 u )

Calculate the molecular masses of the following : (a) Hydrogen, H_(2) , (b) Oxygen, O_(2) , (c ) Chlorine, Cl_(2) , (d) Ammonia, NH_(3) , (e ) Carbon dioxide, CO_(2) (Atomic masses : H = 1 u, O = 16 u , Cl = 35.5 u , N = 14 u , C = 12 u )

Calculate the mass in grams of 0.17 mole of hydrogen sulphide , H_(2)S . (Atomic masses : H = 1 u, S = 32 u )

Calculate the molecular masses of the following: (i) C_(12)H_(22)O_(11) , (ii) Al_(2)(SO_(4))_(3) Given atomic masses : C = 12.0 u, H= 1.0 u, O = 16.0 u, Al = 27.0 u, S = 32.0 u

Calculate the mass of 1 mole of each one of the following: (a) NaCl , (b) CaCO_(3) , (c ) FeSO_(4).7H_(2)O , (d) Na_(2)O_(2) (Atomic masses : H = 1 u , C = 12 u, O = 16 u , Na = 23 u , S = 32 u , Cl = 35.5 u , Ca = 40 u, Fe = 56 u )

Calculate the molecular mass of sulphuric acid (H_(2)SO_(4)) . (Given : Atomic masses : H = 1 , S = 32 u , O = 16 u ).

Calculate the molecular mass of nitric acid, HNO_(3) . (Atomic masses : H = 1 u, N = 14 u , O = 16 u )

Convert into moles : (a) 12 g of oxygen gas (b) 20 g of water (c ) 22 g of carbon dioxide (Atomic masses : O = 16 u, H = 1 u and C = 12 u )

LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
  1. Calculate the molecular mass of chloroform (CHCl(3)). (Atomic masses...

    Text Solution

    |

  2. Calculate the molecular mass of hydrogen bromide (HBr). (Atomic masses...

    Text Solution

    |

  3. Calculate the molecular masses of the following compounds : (a) Hy...

    Text Solution

    |

  4. State the law of conservation of mass. Give one example to illustrate...

    Text Solution

    |

  5. State the law of constant proportions. Give one example to illustrate ...

    Text Solution

    |

  6. (a) State the various postulates of Dalton's atomic theory of matter...

    Text Solution

    |

  7. (a) What is the significance of the symbol of an element ? Explain w...

    Text Solution

    |

  8. (a) What is an atom ? How do atoms usually exist ? (b) What i...

    Text Solution

    |

  9. (a) Define atomic mass unit. What is its symbol ? (b) Define atomic...

    Text Solution

    |

  10. The atomicites of ozone, sulphur, phosphorus and argon are respectivel...

    Text Solution

    |

  11. The symbol of a metal element which is used in making thermometers is ...

    Text Solution

    |

  12. The Latin language name of an element is natrium. The English name of...

    Text Solution

    |

  13. The atomic theory of matter was proposed by :

    Text Solution

    |

  14. One of the following elements has an atomicity of 'one' . This ele...

    Text Solution

    |

  15. The English name of an element is potassium, its Latin name will be...

    Text Solution

    |

  16. The law of conservation of mass was given by :

    Text Solution

    |

  17. The element having atomicity 'four' is most likely to be :

    Text Solution

    |

  18. If 1.4 g of calcium oxide is formed by the complete decomposition of c...

    Text Solution

    |

  19. The law of constant proportions was given by

    Text Solution

    |

  20. Out of ozone, phosphorus, sulphur and krypton, the elements having the...

    Text Solution

    |