A sample of `NaNO_(3)` weighing `0.38 g` is placed in a `50.0 mL` volumetric flask. The flask is then filled with water to the mark on the neck. What is the molarity of the solution?

Explanation

Molarity `xx` Volume in mL= Milli-mole `=(w)/(M)xx1000`
`:.` Molarity `xx50=(0.38)/(85)xx1000`
[Mol.wt.of `NaNO_(3)=85]`
Molarity `= 8.94xx10^(-2)`