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  3. 9th Class
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  5. Atoms and Molecules

9th Class Science Atoms and Molecules Question Bank Self Test-2

  • question_answer
    The molecular mass of \[{{K}_{2}}C{{O}_{3}}\] is:

    A) (a) 128 amu

    B) (b) 112 amu

    C) (c) 138 amu

    D) (d) 122 amu

    E) (e) None of these

    Correct Answer: A

    Solution :

    (a)


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