Which two changes would make this reaction favor the formation of products? 2SO2 + O2 ⇄ 2SO3 + energy

it takes about 30 days for it to break down

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.