How many sulfur atoms are expected in the reactants of this chemical reaction?
? caso3
a. 0
b. 1
c. 2
d. 3

Answer is B, because CaSO3 only has one S

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

Deposition is the transition of matter going from gas to solid without passing through the liquid phase.a.) gas—-> solid