Final answer:
The student's question revolves around mass-mass calculations in chemistry to determine the required amount of a substance for a chemical reaction. It involves converting between moles and grams using molecular weights and utilizing concentration for solutions.
Step-by-step explanation:
The question you've asked is about performing mass-mass calculations in chemistry to determine how much of a chemical substance is needed for a reaction or is produced by a reaction. Mass-mass calculations are a fundamental part of stoichiometry, which is a section of chemistry that deals with the calculation of reactants and products in chemical reactions. For instance, to determine the grams of bilirubin needed for an experiment when given the moles required, you would use the molecular weight of bilirubin to convert from moles to grams. This process involves using conversion factors and balanced chemical equations.
When dealing with solutions, knowledge of concentration (molarity) and volume can be used to calculate the amount of solute needed, as in the case with dimethylamine. Conversely, if you have a certain mass of a compound in a solution and you know the molarity, you can calculate the volume of solution that contains a specific amount of the substance.