Final answer:
To determine the number of moles of citric acid in 10.0 mL of pineapple juice, you can use the formula: Moles = Concentration x Volume. Convert the volume from milliliters to liters by dividing by 1000, then multiply by the concentration to find the number of moles.
Step-by-step explanation:
To determine the number of moles of citric acid in 10.0 mL of pineapple juice, we need to know the concentration of citric acid in the juice. If we assume that the concentration is given in moles per liter (Molarity), we can use the formula:
Moles = Concentration x Volume (in liters)
Let's say the concentration of citric acid in the pineapple juice is 0.05 M (moles per liter). Since the volume is given in milliliters, we need to convert it to liters by dividing by 1000:
Volume (in liters) = 10.0 mL / 1000 = 0.01 L
Now we can calculate the number of moles:
Moles = 0.05 M x 0.01 L = 0.0005 moles