Question

3. How many grams of glucose are needed to prepare 400mL of 5% glucose solution? Given:

Find:

Formula:

Solution:​

Answer 1

Answer

, 20 grams of glucose is required for preparing 400 mL of 5% solution.

Answer 2

Answer:

20 grams of glucose is required.

Explanation:

Given: The compound glucose is used to prepare 400 mL of a 5% glucose solution

To find: Grams of glucose needed

Explanation: Let grams of glucose required be m.

5% glucose solution means that there should be 5 grams of glucose per 100 mL of the solution.

Here, volume of water given is 400 mL.

For preparing this solution in 100 mL, 5 grams of glucose would have been sufficient. But, since the volume given is 400 mL which is 4 times the volume the mass required will also be 4 times of 5 grams.

Mass of glucose required= 5*4 = 20 grams

Therefore, 20 grams of glucose is required for preparing 400 mL of 5% solution.