8 Nitrogen, 4 oxygen, 2 N2O
I pick B Because Chemistry is all about plants and they can use a pesticide on plants
Answer is: 20 ions, left side.
Unbalanced half reaction: C₅O₅²⁻(g) → CO₃²⁻(aq).
1) There are 5 carbon atoms on the left side of half reaction and 1 carbon atom on right, so first add coefficient 5 in fron of carbon dioxide to balance carbon atoms: C₅O₅²⁻(g) → 5CO₃²⁻(aq).
2) Because there are more oxygen atoms on the right, add OH⁻ ions on the left side of half reaction and water on the right: OH⁻(aq) + C₅O₅²⁻(g) → 5CO₃²⁻(aq) + H₂O(l).
3) Balance oxygen (25 atoms on boths side) and hydrogen (20 atoms on both side of half reaction) atoms:
Balanced half reaction: 20OH⁻(aq) + C₅O₅²⁻(g) → 5CO₃²⁻(aq) + 10H₂O(l).
Answer : The solubility is, 
Explanation : Given,
= Henry's law constant of argon = 
First we have to calculate the pressure of argon.
Pressure of argon = 
Pressure of argon = 0.0093 atm
Now we have to calculate the solubility.
As, the solubility of argon in 1 atm pressure = 
So, the solubility of argon in 0.0093 atm pressure = 
=
Thus, the solubility is,
