How determine when to use s, l, g, aq in chemical equations

Use them depending on what state of matter the element is in. E.g.

C + O2 -> CO2

Carbon is in a solid amd reacts with oxygen, a gas, and the product of the equation, which in this case is carbon dioxide is also a gas, therefore the equation would be

C(s) + O2(g) -> CO2(g)

i would say b

explanation:

but i think i would need more information than that

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".