Final answer:
The molarity of the caffeine solution in white coffee is 0.00221 M.
Step-by-step explanation:
The molarity of a solution is calculated using the formula:
Molarity (M) = moles of solute / volume of solution (in liters)
In this case, we need to convert the mass of caffeine (in grams) into moles. The molar mass of caffeine (C8H10N4O2) is 194.19 g/mol. So, the number of moles of caffeine can be calculated as follows:
Moles = mass / molar mass = 0.150 g / 194.19 g/mol = 0.000773 moles
Next, we need to convert the volume of the coffee (in milliliters) into liters. The volume of the coffee is given as 350 mL, which is equal to 0.350 liters.
Now we can calculate the molarity:
Molarity = moles / volume = 0.000773 moles / 0.350 liters = 0.00221 M