Question

How many grams of NaOH is needed to make a 0.1 L of 10 mg/ml solution?

Answer 1

The first step to answer this question is to convert the volume of solution needed, that is in liters, to mililiters.

`0.1L\cdot(1000mL)/(L)=100mL`

Use the concentration of the solution to find how many mg are present in 100mL of the solution:

`100mL\cdot(10mg)/(mL)=1000mg`

Now, convert the amount of mg present in the solution to grams:

`1000mg\cdot(1g)/(1000mg)=1g`

It means that 1g of NaOH is needed to prepare 0.1L of a 10mg/mL solution.