Answer:
+3
Explanation:
The oxygen all have a -2 oxidation state. (peroxides are exceptions)
The chemical structure is symmetrical. Both carbon are equivalent.
2 (oxidation state of carbon) + 4 (oxidation state of oxygen) = charge of ion.
2 (oxidation state of carbon) + 4 (-2) = -2
oxidation state of carbon = +3
The answer is (E). protons.
The atomic number of an atom is equal to the number of protons in the nucleus.
I hope this helped.
Pb(NO3)2 + 2KI ---> PbI2↓ + 2KNO3
the precipitation reaction
Answer:
B.) 2x
Explanation:
Hello,
In this case, we can apply the following rule of three, knowing that 0.1 dm³ equals x and 0.2 dm³ is the unknown:
Thus, solving for the unknown we find:
Therefore, the answer is B.) 2x.
Best regards.
