Home
Class 12
CHEMISTRY
Calculate the molecular mass of the foll...

Calculate the molecular mass of the following :
(i) `H_(2)O`
(ii) `CO_(2)`
(iii) `CH_(4)`

Text Solution

Verified by Experts

`"(i) Molecular mass of "H_(2)O=2(1.008amu)+16.00amu =18.016amu`
`"(ii) Molecular mass of "CO_(2)=12.01amu+2xx16.00amu=44.01amu`
`"(iii) Molecular mass of "CH_(4)=12.01amu+4(1.008amu)=16.042amu`
Promotional Banner

Topper's Solved these Questions

  • SOME BASIC CONCEPTS OF CHEMISTRY

    PRADEEP|Exercise NCERT (EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS) (NCERT EXEMPLAR PROBLEMS CHAPTER 1) SOME BASIC CONCEPTS OF CHEMISTRY (MULTIPLE CHOICE QUESTIONS - I)|15 Videos
  • SOME BASIC CONCEPTS OF CHEMISTRY

    PRADEEP|Exercise NCERT (EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS) (NCERT EXEMPLAR PROBLEMS CHAPTER 1) SOME BASIC CONCEPTS OF CHEMISTRY (MULTIPLE CHOICE QUESTIONS - II)|7 Videos
  • SOME BASIC CONCEPTS OF CHEMISTRY

    PRADEEP|Exercise CONCEPTUAL QUESTIONS|16 Videos
  • SOLUTIONS

    PRADEEP|Exercise IMPORTANT QUESTIONS FOR BOARD EXAMINATION|31 Videos
  • SURFACE CHEMISTRY

    PRADEEP|Exercise IMPORTANT QUESTIONS (FOR BOARD EXAMINATION)|28 Videos

Similar Questions

Explore conceptually related problems

Calculate the molecular mass of the following: a. H_(2)O b. CO_(2) c. CH_(4)

Calculate the molecular mass of the following substance (i) water (H_(2)O) (ii) Sulphur dioxide (SO_(2)) (iii) Oxygen molecule (O_(2)) (iv) Carbon monoxide (CO)

Which molecule is polar in each of the following pairs ? (i) HF, F_(2)" (ii) "CO_(2), H_(2)O (iii) n_(2),NH_(3)" (iv) "CH_(4),CH_(3)Cl.

Calculate the molecular masses of the following compounds : (a) Methanol, CH_(3)OH , (b) Ethanol, C_(2)H_(5)OH

Calculate molecular mass of the following molecules: a. Sulphuric acid (H_(2) SO_(4)) b. Glucose (C_(6) H_(12) O_(6)) c. Methane (CH_(4))

Calculate the molecular masses of H_(2), O_(2), Cl_(2), CO_(2), CH_(4), C_(2)H_(6), C_(2)H_(4), NH_(3), CH_(3)OH .

Write the empirical formulae of the following compounds. (i) C_(6)H_(6) (ii) Na_(2)CO_(3) (iii) C_(6)H_(12)O_(6) (iv) H_(2)O_(2) (v) CH_(3)COOH (vi) CuSO_(4)

PRADEEP-SOME BASIC CONCEPTS OF CHEMISTRY-NCERT (QUESTIONS AND EXERCISES WITH ANSWERS)
  1. Calculate the molecular mass of the following : (i) H(2)O (ii) CO(...

    Text Solution

    |

  2. Calculate the mass precent of different elements present in sodium sul...

    Text Solution

    |

  3. Determine the empirical formula of an oxide of iron which has 69.9% ir...

    Text Solution

    |

  4. Calculate the amount of carbon dioxide that could be produced when a...

    Text Solution

    |

  5. Calculate the mass of sodium acetate (CH(3)COONa) required to make 500...

    Text Solution

    |

  6. Calculate the concentration of nitric acid in moles per litre in a sam...

    Text Solution

    |

  7. How much copper can be obtained from 100g of copper sulphate (CuSO(4))...

    Text Solution

    |

  8. Determine the molecular formula of an oxide of iron in which the mass ...

    Text Solution

    |

  9. Calculate the atomic mass (average) of chlorine using the following da...

    Text Solution

    |

  10. In three moles of ethane (C(2)H(6)), calculate the following: (i) N...

    Text Solution

    |

  11. What is the concentration of sugar (C(12)H(22)O(11)) in mol L^(-1) if ...

    Text Solution

    |

  12. If the density of methanol is 0.793 kg L^(-1) what ia its volume neede...

    Text Solution

    |

  13. Pressure is determined as force per unit area of the surface. The SI u...

    Text Solution

    |

  14. What is the S.I. unit of mass ? How is it defined?

    Text Solution

    |

  15. Match the following prefixes with their multiples: {:(,"Prefixes","...

    Text Solution

    |

  16. What do you mean by significant figures?

    Text Solution

    |

  17. A sample of drinking water was found to be severely contaminated with ...

    Text Solution

    |

  18. Express the following in the scientific notation: (i) 0.0048, (ii) 2...

    Text Solution

    |

  19. How many significant figures are present in the following? (i) 0.004...

    Text Solution

    |

  20. Round up the following upto three significant figures: a. 34.216 b...

    Text Solution

    |