Home
Class 12
CHEMISTRY
X grams of calcium carbonate was complet...

X grams of calcium carbonate was completely burnt in air.The weight of solid residue formet is 28g,.What is the value of X (in grams )?

A

44

B

200

C

150

D

50

Text Solution

Verified by Experts

The correct Answer is:
d
` underset((100g))(CaCO_3)(s) overset (Delta)toCaO(s)+CO_2(g) underset((56g))`
`therefore 100g `of `CaCO_3` gives 56 g CaO and X g of `CaCO_` gives 28 g of CaO
Then ,`X=(100xx28)/(56)=5o g ` of `CaCO_3`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

X' grams of calcium carbonate was completely burnt in air. The weight of the solid residue formed is 28 g. What is the value of "X'(in grams)?

x grams of calcium carbonate was completely burnt in air. The weight of the solid residue formed is 28 g. What is the value of x (in grams)?

50 grams of calcium carbonate was completely burnt in air. What is the weight (in grams) of the residue? Atomic weights of Ca, C and O are 40,12 and 16 respectively)

X grams of water is mixed in 69 g of ethanol. Mole fraction of ethanol in the resultant solution is 0.6. What is the value of X in grams?

X litre of carbon monoxide is present at mSTP. It is completely oxidised to CO_2 . Formed is 11.207 l. What is the vlue of X in litres?

Two grams of sulphur is completely burnt in oxygen to form SO_(2) . In this reacton, what is the volume (in litres) of oxygen consumed at STP? (At.wts. of sulphur and oxygen are 32 and 16 respectively)

When X amperes of current is passed through molten for 96.5s, 0.09 g of aluminium is deposited. What is the value of X?

15 grams of a mixture of calcium carbonate and sodium carbonate on ignition liberated a gas which has occupied 2.24L at STP. What is the weight ratio of components in the given mixture?

1 kg of ethylene undergo polymerization completely, then the weight of polyethylene obtained is 10^x gm. What is x ?

SIA PUBLICATION-ATOMIC STRUCTURE-MCQ.S
  1. The atomic number of elements X,Y and Z are 19.21 and 25 respectively....

    Text Solution

    |

  2. An electrons is moving in Bohr's fourth orbits De-Broglie wavelength s...

    Text Solution

    |

  3. X grams of calcium carbonate was completely burnt in air.The weight of...

    Text Solution

    |

  4. Which of the following elements has least number of e,ectrons in M she...

    Text Solution

    |

  5. What is the volume (inL) of oxygen required at STP to completely con...

    Text Solution

    |

  6. If the electron of a hydrogen atom is present in the first orbit. The ...

    Text Solution

    |

  7. If the wavelength of an electromagnetic radiation is 2000 A. what is i...

    Text Solution

    |

  8. X litre of carbon monoxide is present at mSTP. It is completely oxidi...

    Text Solution

    |

  9. The concentration of a 100 ml solution containing xg of Na(2)CO(3) (mo...

    Text Solution

    |

  10. Which of the following statements are correct?

    Text Solution

    |

  11. The energy of an electromagnetic radiation is 19.875 xx 10^(-13)erg. W...

    Text Solution

    |

  12. Which of the following is not iso-electronic pair?

    Text Solution

    |

  13. The energy of an electron present in Bohr's second orbit of hydrogen a...

    Text Solution

    |

  14. In the ground state, an element has 13 electrons in M shell.The elemen...

    Text Solution

    |

  15. What is the volume (in litres) of oxygen atSTP required for complete c...

    Text Solution

    |

  16. What are the values of n1 and n2 for the 2nd line in the Lyman series ...

    Text Solution

    |

  17. How many electrons are present in the M shell of an atom odf an el,eme...

    Text Solution

    |

  18. What is the vlue ( in litres) of CO2 liberated at STP when 2.12 g of s...

    Text Solution

    |

  19. In ruthorford's -164KJ, mol^(-1)-ray scattering expirement, the alpha...

    Text Solution

    |

  20. Among the first lines of Lyman,Balmer, paschen and Brackett series in ...

    Text Solution

    |