Home
Class 12
CHEMISTRY
How many iron atoms are present in a sta...

How many iron atoms are present in a stainless stell ball bearing having a radius of 0.254 cm? the stainless steel contains 85.6% Fe by weight and has density of 7.75 `g//cm^(3)`.

Text Solution

Verified by Experts

The correct Answer is:
`4.91xx10^(21)`
Promotional Banner

Topper's Solved these Questions

  • BASIC PRINCIPLES

    OP TANDON|Exercise OBJECTIVE QUE.|146 Videos

  • BASIC PRINCIPLES

    OP TANDON|Exercise SET-2|7 Videos

  • BASIC PRINCIPLES

    OP TANDON|Exercise ILLUSTRATION|19 Videos

  • ALDEHYDES AND KETONES

    OP TANDON|Exercise SINGLE INTEGER ANSWER TYPE QUESTIONS|10 Videos

  • BASIC PRINCIPLES OF ORGANIC COMPOUNDS (MECHANISM OF ORGANIC REACTIONS)

    OP TANDON|Exercise SINGLE INTEGER ANSWER TYPE QUESTIONS|4 Videos

Similar Questions

Explore conceptually related problems

Find the mass of 555cm^(3) of iron in kg when density of iron is 7.6g//cm^(3)

The molarity of a solution containing 50g of NaCl in 500g of a solution and having a density of 0.936 "g/cm"^(3) is :

An iron ball of radius 0.3cm falls through a column of oil of density 0.94 cm^(-3) .It is found to attain a terminal velocity of 0.5 cm^(-1) Determine the viscosity of the oil, Given that density of iron is 7.8g cm^(-3)

Figure shows an iron ball suspended by thread of negligible mass from an upright cylinder that floats partially submerged in water. The cylinder has a height of 6.00 cm, a face area of 12.0 cm^(2) on the top and bottom, and a density of 0.25 g//cm^(2) , and 1.00 cm of its height is above the water surface. What is the radius of the iron ball?

Magnetic moment of an iron atoms is 1.75 xx 10^(-23) A - m^(2) . If dipole moments of all the atoms of an iron bar of 6 cm xx 1 cm xx 1 cm are aligend , the dipole moment of the bar will be (Atomic weight of iron is 56 and density is 7.8 g//cm^(3) .)

A composite rod is made from stainless steel and iron and has a length of 0.5 m The cross-section of this composite rod consists of a square within a circle. The square is 1 cm on a side k_(steel)=14 W//m^(@) C, k_(iron)=80 W//m^(@) C One end of the rod is at 78^(@) C and other end is in melting ice. Find the amount of ice melted in 7 minutes (in gm). (Take pi=22//7 )

How many solid speherical balls of radus 3.5 cm can be recast by melting a metallic cone of height 35 cm and base radius 7 cm?

An iron casting containing a number of cavities weight 6000N in air and 4000N in water. What is the volume of the cavities in the casting? Density of iron is 7.87g//cm^(3) . Take g = 9.8 m//s^(2) and density of water = 10^(3) kg//m^(3) .

A hollow spherical iron shell floats almost completely submerged in water. The outer diameter is 50.0 cm, and the density of iron is 7.87 g//cm^(3) Find the inner diameter.

OP TANDON-BASIC PRINCIPLES-PRACTICE PROB.
  1. Density of water at room tempearture is 1.0g cm^(-3). How many molecul...

    Text Solution

    |

  2. Naturally occurring boron contain of two isotopes, whose atomic masses...

    Text Solution

    |

  3. How many iron atoms are present in a stainless stell ball bearing havi...

    Text Solution

    |

  4. The nucleus of an atom X is supposed to be a sphere with a radius of 5...

    Text Solution

    |

  5. Calculate the number of atoms of each element present in 122.5g of KC...

    Text Solution

    |

  6. In an experiment , 1.0g CaCO(3) on heating evolved 224 mL of CO(2) at ...

    Text Solution

    |

  7. What mass of potassium chlorate (KCIO(3)) on heating gives 1.491 g of ...

    Text Solution

    |

  8. A compound AB completely decomposes into A and B on heating. 50g of AB...

    Text Solution

    |

  9. If 12.6 of NaHCO(3) is added to 20.0g of HCl solution, the residue sol...

    Text Solution

    |

  10. Metal M and chlorine combine in different proportions to form two comp...

    Text Solution

    |

  11. By means of the given analytical results show that law of multiple pro...

    Text Solution

    |

  12. 1 g of metal, having no variable valency, produces 1.67g of its oxide...

    Text Solution

    |

  13. 0.36g of Mg combines with chlorine to produce 1.425 g of mangesium chl...

    Text Solution

    |

  14. Cabon dioxide contains 27.27% carbon , carbon disulphide contains 15.9...

    Text Solution

    |

  15. Phosphorus and chlorine form two compounds. The first contains 22.54% ...

    Text Solution

    |

  16. A and B are two hydrocarbons. A and B are heated separated in excess o...

    Text Solution

    |

  17. Aluminium oxide contains 52.9% aluminium and carbon dioxide contains 2...

    Text Solution

    |

  18. Two volumes of ammonia , on dissociation gave one volume of nitrogen a...

    Text Solution

    |

  19. The following results were obtained by heating different oxides of lea...

    Text Solution

    |

  20. Calculate the number of g -moles of CaO that could be obtained from 42...

    Text Solution

    |