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science

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calculate the number of molecules in 200 gm of caco3.

  • science -

    mol wt of CaCO3 is 100g
    so, 200g = 2 moles = 2*6.02*10^23 molecules.

  • science -

    reason for _______ earth is tilted 23 1/2 from a line perpendicular to its orbit, the length of daylight varies and because of the angle at which the sun's energy strikes a given location through the years

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