Home
Class 9
CHEMISTRY
Calculate the number of moles of iron in...

Calculate the number of moles of iron in a sample containing `10^(22)` atoms of iron.

Text Solution

Verified by Experts

`"Number of moles"=("No. of atoms of iron (N)")/("Avogadro's no. of atoms"(N_(0)))=(N)/(N_(0))`
`=((1.0xx10^(22)))/((6.022xx10^(23)"atoms"))=0.166"mol"`
Promotional Banner

Topper's Solved these Questions

  • ATOMS AND MOLECULES

    DINESH PUBLICATION|Exercise NCERT IN TEXT PROBLEMS|16 Videos

  • ATOMS AND MOLECULES

    DINESH PUBLICATION|Exercise N.C.E.R.T. END EXERCISE|11 Videos

  • IS MATTER AROUND US PURE

    DINESH PUBLICATION|Exercise LAQs|10 Videos

Similar Questions

Explore conceptually related problems

Calculate the number of moles of iodine in a sample containing 1.0 xx 10^22 molecules.

A sample of iron has a mass of 1.68 g. Calculate (a) the number of moles of iron present, (6) the number of atoms of iron in the sample

Calculate the number of iron atoms in a piece of iron weighing 2.8 g (Atomic mass of iron = 56 u ).

What is the atomic weight of an element X for which a sample containing 1.58xx10^(22) atoms weigh 1.05 g?

Calculate the number of moles in the following: (a) 7.85 g of iron, (b) 4.68 mg of silicon ( c) 65.6 mu g of carbon.

Calculate the number of moles in 3.0115 xx 10^(23) atoms of calcium.

Calculate the number of moles in 12.044 xx 10^(23) atoms of phosphorus.

Calculate the number of moles in 12.044 xx 10^(23) helium atoms.

DINESH PUBLICATION-ATOMS AND MOLECULES-LONG ANSWER QUESTIONS
  1. Calculate the number of moles of iron in a sample containing 10^(22) a...

    Text Solution

    |

  2. Veriy by calculating that a) 5 moles of CO(2) and 5 moles of H(2)O d...

    Text Solution

    |

  3. Find the ratio by mass of the combining elements in the following comp...

    Text Solution

    |

  4. Calcium chlroide when dissolved in water dissociates into its ions acc...

    Text Solution

    |

  5. The difference in the mass of 100 moles of each of sodium atoms and so...

    Text Solution

    |

  6. Cinnabar (HgS) is a prominent ore of mercury. How many grams of mercur...

    Text Solution

    |

  7. The mass of one steel screw is 4.11 g. Find the mass of the of one mol...

    Text Solution

    |

  8. A sample of vitamin C is known to contain 2.58 xx 10^(24) oxygen atoms...

    Text Solution

    |

  9. Raunak took 5 moles of carbon atoms in a container and Krish also took...

    Text Solution

    |

  10. Fill in the missing data in the given table

    Text Solution

    |

  11. The visible universe is estimated to contain 10^(22) stars. How many m...

    Text Solution

    |

  12. What is the SI prefix for each of the following multiples and submulti...

    Text Solution

    |

  13. Express each of the following in kilograms a) 5.84 xx 10^(-3)mg b)...

    Text Solution

    |

  14. Compute the difference in masses of 10^(3) moles of each of magnesium ...

    Text Solution

    |

  15. Which has more number of atoms? 100g of N(2) or 100g of NH(3)

    Text Solution

    |

  16. Compute the number of ions present in 5.85g of sodium chloride.

    Text Solution

    |

  17. A gold sample contains 90% of gold and the rest copper. How many atoms...

    Text Solution

    |

  18. What are ionic and molecular compounds? Give exmples.

    Text Solution

    |

  19. Compute the difference in masses of one mole each of aluminium atoms a...

    Text Solution

    |

  20. A silver ornament of mass 'm' gram is polished with gold equivalent to...

    Text Solution

    |

  21. A sample of ethane (C(2)H(6)) gas has the same mass a 1.5 xx 10^(20) m...

    Text Solution

    |