Calculation of Molarity
For proper definition of Molarity and other relationships refer
Molarity is defined as the number of moles of solute per unit volume of the solution.
That means there has to 2 moles of solute in a litre of solution. For 250 ml it is 0.5 moles. If you know the Molecular weight of
Required number of moles
Molecular weight of
So the weight of required
Here's how you'd go about solving this problem.
You know that you must have a
If you find out how many moles of solute you need, you can determine the mass in grams by using sodium chloride's molar mass, which represents how much 1 mole of
(notice I've converted mL to L, sicne molarity is defined as moles per liter)
This means that you need
Now to determine the mass in grams
As a conclusion, if you dissolve