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Why are the atomic mass of most of the e...

Why are the atomic mass of most of the elements fractional ?

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It is because most of the elements occur in nature as a mixture of isotopes and their atomic masses are the average relative atomic masses of the isotopes depending in their abundance.
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SURA PUBLICATION-BASIC CONCEPTS OF CHEMISTRY AND CHEMICAL CALCULATIONS-ADDITIONAL QUESTIONS (ADDITIONAL SHORT ANSWERS)
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  2. (i) If an acid is mono basic. How will you relate their equivalent mas...

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  3. Why are the atomic mass of most of the elements fractional ?

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  4. Write down the formulate for calculating the equivalent mass of an aci...

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  6. Define stoichiometry.

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  8. Write the simplest formula for the following . (i) N2O4 (ii) C6H12O6...

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  9. Write the electronic concept of oxidation and reduction reactions.

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  10. Calculate the amount of water produced by the combustion of 32 g of me...

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  11. Categorise the redox reaction that occur in our daily life.

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  12. Which of the following behaves as both oxidising and reducing agents ?

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  16. Nitric acid is an oxidising agent and reacts with PbO but it does not ...

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  17. Which one of the two, CIO(2)6(-) or CIO(4)^(-) shows disproportionatio...

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  18. Identify the type of redox reaction taking place in the following . ...

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  20. Identify the type of redox reaction taking place in the following . ...

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