Question

How many grams of naoh should be dissolved to make 100cm3 of 0.15m naoh solution?

Answer 1

In 100mL100mL of 0.5MNaOH0.5MNaOH solution, there are 100ml×0.5molNaOHL=50mmolNaOH100ml×0.5molNaOHL=50mmolNaOH.

Molar mass of NaOHNaOH = 40gmolNaOH40gmolNaOH.

Mass of NaOHNaOH in 50mmol50mmol is 50×10−3×40g=2g50×10−3×40g=2g.

Answer 2

100gm of glucose dissolved in a final volume of 1000mL (1 liter) will make a 10% w/v solution.

To calculate %w/v problems:

Total volume needed (mL) x 0.10 (10% w/v solution desired) = gm solute needed.

The amount of glucose to be dissolved <= 0.10 gm

Energy is required for the ordinary working of the organs in the body. Numerous tissues can likewise utilize fat or protein as a vitality source however others, for example, the cerebrum and red platelets, can just utilize glucose. Glucose is stored in the body as glycogen which helps us function properly.