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Mole Concept Te...

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  • Question 1
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    What is the total number of moles at the end of reaction when one mole each of CO and O2 are made to react at STP?

  • Question 2
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    Molecular weight of heavy water used as a moderator in nuclear reactors is

  • Question 3
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    Which of the following quantities is the molecular mass of AI2(SO4)3? The atomic masses of AI, S and O are 27, 32 and 16 respectively.

  • Question 4
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    What is the molecular mass of CaCO3?

  • Question 5
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    Calculate the molar mass of ammonium sulphate.

  • Question 6
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    The molecular mass of Cl2 is

  • Question 7
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    The percentage of nitrogen in dry air is

  • Question 8
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    A compound of nitrogen and oxygen, on analysis, showed that it contained 28 g of nitrogen for every 32 g of oxygen. Which of the following formulae correctly represents the compound?

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