PH = - log [ H+ ]
pH = - log [ 8.2 x 10⁻⁴]
pH = 3.08
hope this helps!
Question 12 is Noble gas and question 13 is actinide-series element.
Answer:
+4
Explanation:
Hello,
In this case, considering nitrogen dioxide's formula:
And due to the fact that oxygen's oxidation state is -2 in this case, we could find nitrogen's oxidation state in nitrogen dioxide by using a balance charge:
For that reason, nitrogen's oxidation state is +4:
Best regards.