JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Topic Test - Some Basic Concepts of Chemistry (8-5-21)

  • question_answer
    The number of oxygen atoms in 4.4 g of \[C{{O}_{2}}\]is approx. 

    A) \[1.2\times {{10}^{23}}\]

    B) \[6\times {{10}^{22}}\]

    C) \[6\times {{10}^{23}}\]

    D) \[12\times {{10}^{23}}\]

    Correct Answer: A

    Solution :

    [a] 44g of CO2 has \[2\times 6\times {{10}^{23}}\]atoms of oxygen
                4.4g of CO2 has =\[\frac{12\times {{10}^{23}}}{44}\times 4.4\]
                                                     \[=1.2\times {{10}^{23}}\] atoms.


You need to login to perform this action.
You will be redirected in 3 sec spinner