Answer:
A general guideline to determine if oxide is acidic, basic, or amphoteric is to use the periodic table. Typically, metals such as Ba form basic oxides (BaO), while nonmetals such as S form acidic oxides (SO3).
Earth's atmosphere is 78% nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon dioxide with very small percentages of other elements. Our atmosphere also contains water vapor.
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Iv: the red and blue kryptonite
Answer: The molar concentration of 
in the solution is 0.2 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
where,
n= moles of solute =
= volume of solution in ml = 100 ml
As 1 mole of 
gives 2 moles of
Thus 0.1 moles of gives = 
moles of
The molar concentration of in the solution is 0.2 M
