Home
Class 9
CHEMISTRY
What is the significance of the formula ...

What is the significance of the formula `H_(2)O` ?

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

What is the significance of the formula of a substance ?

What is the significance of 15 volume of H_2 O_2 solution ?

2H_(2)O to 4H^(+)+O_(2)+4e^(-) Based on the above equation, answer the following questions (a) Where does this reaction take place in plants ? (b) What is the significance of this reaction ?

What is the significance of Hanry's law constant K_(H) ?

In the following reaction 2H_(2)O_(2) rarr 2H_(2)O + O_(2) rate of formation of O_(2) is 3.6" M min"^(–1) . (A) What is rate of formation of H_(2)O ? (B) What is rate of disappearance of H_(2)O_(2) ?

What do the symbols, H_(2) , S and O_(4) mean in the formula H_(2)SO_(4) ?

A compound 'A' formula of C_(3)H_(6)CI_(2) on reaction with alkali can give 'B' of formula C_(3)H_(6)O or 'C' of formula C_(3)H_(4). 'B' on oxidatrtion gave a compound of the formula C_(3)H_(6)O_(2).'C' with dilute H_(2)SO_(4) containing Hg^(2+) ion gave 'D' of formula C_(3)H_(6)O which with bromine and alkali gave the sodium salt of C_(2)H_(4)O_(2) . Then 'A' is

LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
  1. What do the following denote ? (i) N, (ii) 2N, (iii) N(2) , (iv) 2...

    Text Solution

    |

  2. What is the significance of the formula of a substance ?

    Text Solution

    |

  3. What is the significance of the formula H(2)O ?

    Text Solution

    |

  4. The molecular formula of glucose is C(6)H(12)O(6). Calculate its molec...

    Text Solution

    |

  5. Calculate the molecular masses of the following : (a) Hydrogen, H(2)...

    Text Solution

    |

  6. Calculate the molecular masses of the following compounds : (a) Met...

    Text Solution

    |

  7. Calculate the molecular masses of the following compounds : (a) Me...

    Text Solution

    |

  8. Calculate the molecular mass of ethanoic acid, CH(3)COOH. (Atomic ma...

    Text Solution

    |

  9. Calculate the molecular mass of nitric acid, HNO(3). (Atomic masses : ...

    Text Solution

    |

  10. Calculate the molecular mass of chloroform (CHCl(3)). (Atomic masses...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |