Which type of stoichiometric calculation does not require the use of the molar mass?

Volume - volume calculations does not involve molar mass.

Stoichiometry is often used to relate quantities in order to effectively perform chemical calculations. Many stoichiometry calculations often involve moles and also ultimately molar mass.

However, if we are dealing with a volume - volume relationship, we do not use the molar mass rather we make use of the molar volume of a substance.

Learn more about molar volume: link

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".

i think that the answer is c