22: An alloy 20g made up of (AL, Zn and cu) is dipped in an excess 'hydrochloric acid.
Knowing that the percentage by mass of Al was
27% and 6.6 g of residue were
obtained at the end of the reaction.
a. Indicate the redox Couples
b. Compute the mass of each metal
c. Write the half reaction that took place.
d. Deduce the over all equations
e. Compute the volume of the liberated
AL:27 Zn:65 Vm:24
f. Arrange the above couples on the electro
chemical classification

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

i think that the answer is c