Home
Class 11
CHEMISTRY
Calculate the number of moles in (a) 10 ...

Calculate the number of moles in (a) 10 g of Hydrogen molecules (b) 30 g of `H_(2)O`

Text Solution

Verified by Experts

No. of moles `=("mass")/("molecular mass")`
(a) No.of moles of `H_(2)` molecules `=30/18 = 1.666`
Promotional Banner

Topper's Solved these Questions

  • SOME BASIC CONCEPTS OF CHEMISTRY

    SUBHASH PUBLICATION|Exercise THREE MARKS QUESTION WITH ANSWERS|18 Videos

  • S-Block Elements

    SUBHASH PUBLICATION|Exercise Three marks questions and answers|8 Videos

  • STATES OF MATTER : GASES AND LIQUIDS

    SUBHASH PUBLICATION|Exercise NUMERICAL PROBLEMS AND ANSWERS|25 Videos

Similar Questions

Explore conceptually related problems

Calculate the number of moles of atoms in 10.2 g of sodium.

The number of moles in 0.64 g of SO_2 is :

Calculate the number of moles for 52 g of He (finding mole from mass)

Calculate the number of molecules in each of the following (a) 24 g of nitrogen (b) 8.0 g of H_(2)S .

Calculate the number of moles in each of the following : a. 11 g of CO_(2) b. 3.01 xx 10^(22) molecules of CO_(2) c. 1.12 L of CO_(2) at STP

Calculate the following Number of molecules in 43 g NH_3

Calculate the number of particle in 8 g O_(2) molecules (number of molecules from mass)

Calculate the number of molecules present in one drop of H_(2) O whose mass is 0.01 g b. Calculate the number of molecules leaving the liquid suface per second, if the same drop of water evaporates in one hour.

Calculate number of atoms in each of the following" i. 0.5 mol atom of nitorgen ii. 0.2 mol molecules of hydrogen iii. 3.2 g of sulphur Calculate number of molecules in each of the following: i. 14 g of nitrogen ii. 3.4 g of H_(2) S

SUBHASH PUBLICATION-SOME BASIC CONCEPTS OF CHEMISTRY -NUMERICAL PROBLEMS AND ANSWERS:
  1. Find the Molarity of Hydrochloric acid containing 31.5% of hydrochlori...

    Text Solution

    |

  2. Calculate the molecular mass of (i) oxalic and (ii) Formic acid (iii) ...

    Text Solution

    |

  3. 25.0 cm^(3) of an acid required exactly 20.5 cm^(3) of deci molar base...

    Text Solution

    |

  4. Exactly 20.0 cm^(3) of nitric acid neutralized 28.4 cm^(3) of 0.25 M N...

    Text Solution

    |

  5. 18.5 cm^(3) of oxalic acid was completely neutralised by 20.0 cm^(3), ...

    Text Solution

    |

  6. Calculate the number of moles of atoms in 10.2 g of sodium.

    Text Solution

    |

  7. Calculate the number of moles in (a) 10 g of Hydrogen molecules (b) 30...

    Text Solution

    |

  8. Calculate the mass of the following is grams (a) 5.4 moles of O(2) (b)...

    Text Solution

    |

  9. How many atoms of oxygen are present in 300 g of CaCO(3)?

    Text Solution

    |

  10. Calculate number of atoms in (a) 2.5 mole atoms of nitrogen (b) 8.4 of...

    Text Solution

    |

  11. Calculate the number of molecules in each of the following (a) 24 g of...

    Text Solution

    |

  12. A substances on analysis for the following percentage composition the ...

    Text Solution

    |

  13. A compound has the following composition Mg = 9.76%, S = 13.01 %, O=26...

    Text Solution

    |

  14. A compound has the following percentage composition. Carbon 80%, Hydro...

    Text Solution

    |

  15. An organic compound on analyis found to contain 92.3 % carbon and 7.7%...

    Text Solution

    |

  16. 4.2 g of Mg is burnt in 4.8 g of slushy to form magnesium sulphide.Wha...

    Text Solution

    |

  17. 50.0 kg of N(2) (g) and 10.0 kg of H(2) (g) are mixed, to produce NH(3...

    Text Solution

    |

  18. Commercially available conc. HCl contains 38% HCl by mass. (a) What is...

    Text Solution

    |

  19. How many grams of oxgyen (O(2)) are required to completely react with ...

    Text Solution

    |

  20. What is the volume of oxygen at STP can be produced by 8.1 g of potass...

    Text Solution

    |