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Chemistry Test ...

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  • Question 1
    4 / -1

    How many atoms of each of the constituent element are there in 50 gm. of CaCO3 ?

    (at. wt. of Ca = 40, C = 12, O = 16) :-

  • Question 2
    4 / -1

    Calculate the volume of H2S gas (in millilitre) at N.T.P. needed to precipitate cupric sulphide completely from 0.75g of CuCl2?

    [At. wt. of Cu = 63.5, At. wt. of Cl = 35.5]

    Reaction: CuCl2 + H2S —→ CuS + 2HCl

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