Question

To obtain 1.98 g of glucose, how many milliliters of a 0.3M glucose solution will have to be used?

(A) 0.99 mL
(B) 9.9 mL
(C) 99 mL
(D) 990 mL

Answer 1

To obtain 1.98 g of glucose, you would need 0.99 mL of a 0.3M glucose solution.

Step-by-step explanation:

To calculate the volume of a 0.3M glucose solution needed to obtain 1.98g of glucose:

1. Calculate the number of moles of glucose needed by dividing the mass of glucose by its molar mass.
2. Use the molarity of the solution to calculate the volume of the 0.3M glucose solution needed using the equation:

Volume (in L) = Moles of glucose / Molarity of glucose solution.

Convert the volume to milliliters by multiplying it by 1000.

Therefore, in this case, the volume of a 0.3M glucose solution needed to obtain 1.98g of glucose is 0.99 mL.