Final answer:
By calculating the moles of steric acid using the given concentration and volume, and then converting moles to molecules using Avogadro's number, we get approximately 9.87x10^16 molecules of steric acid in a milliliter, which does not exactly match any of the provided options.
Step-by-step explanation:
To determine how many molecules of steric acid are in a milliliter, we need to calculate the number of moles in 1 mL of the solution and then convert that into molecules. First, we calculate the moles of steric acid using the concentration of the solution and the volume:
Moles of steric Acid = (Concentration in g/mol) x (Volume in L)
= (1.64x10-4 g/mol) x (1x10-3 L)
= 1.64x10-7 moles
Next, we use Avogadro's number to find the number of molecules:
Number of Molecules = (Moles of steric acid) x (Avogadro's number)
= (1.64x10-7 moles) x (6.02x1023 molecules/mol)
= 9.87x1016 molecules
However, none of the provided options exactly match the calculated number of molecules. It suggests that there may have been a misprint in the question or a misunderstanding in the calculation. Please recheck the concentration, the volume, or the provided options.