Write down the cell equation. please

see explanation

Explanation:

symbiology is (oxidation rxn || reduction rxn)

=> Zn°|Zn⁺² || Cu⁺²|Cu° => Zn°(s) + Cu⁺²(aq) => Zn⁺²(aq) + Cu°(s)

option A. Cobalt

Explanation:

1) Data:

Q = 1.24 × 10⁶ J
m = 2 kg
Tf = 1768 K
Ti = 298 K
Cs = ?

2) Formula:

Q = m Cs ΔT
ΔT = Tf - Ti = 1,768K - 298K = 1,470K

3) Calculations:

i) Solve for Cs:

Cs = Q / [ m ΔT]

ii) Substitute the data:

Cs = 1.24 × 10⁵ J / [ 2kg (1768K - 298K) ] = 421 J / (kg K)

4) Compare with the specific heats (Cs) of the vaious metals given and you find that it is Cobalt.