Question

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Answer 1

Answer:

5 ➜ Since there are two electrons in the first orbital of the O sublevel, there is greater electronic repulsion in the 2p sublevel for O than N. Therefore, it is easier to remove an electron from the O than the N, are the ionization energy of O is lower than N.

6 ➜ To calculate the mass of sodium carbonate, substitute the value of mole and molecular weight in the equation. Thus, the weight of 0.1 mole sodium carbonate is 10.6g. Therefore, the correct option is C.

7 ➜ A disproportionation reaction is when a multiatomic species whose pertinent element has a specific oxidation state gets oxidized and reduced in two separate half- reactions, yielding two other products containing the same pertinent element. The convenient example is Mn203 becoming Mn2 + and MnO2.