The answer is C. Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g)
Answer:
Electrons are trapped inside the atom because of the attraction forces with positively charged protons that are found in the nucleus.
Answer:
B. The carbons on either side of the double bond are Pointed in opposite directions
Answer:
The overall change in the oxidation number of sulfur is 8.
Explanation:
Oxidation number is defined number assigned to an element in reaction which represent the loss or gain of electrons by an atom of an element in a compound.
In 
let the oxidation number of S in hydrogen sulfide be x.

x = -2
In 
let the oxidation number of S in sulfate ion be x.

x = -2 + 8 = +6
The overall change in the oxidation number of sulfur :
= [+6] - [-2] = 8
