Question

If 5.4 g of NaNO3 is dissolved in 350 mL of water, what is the molarity of the solution?

Answer 1

Answer:

0.18 Moles

Explanation:

first you need to convert the 5.4g to moles using molar mass

$(\frac{5.4g}{1})(\frac{1mol}{84.99g} )=\frac{5.4g}{84.99g} =0.0635mol NaNO_{3}$)

once you have that done you can use the molarity equation to get the answer

$M=\frac{0.0635mol}{0.350ml} =0.181428$

now you need to round to the correct sig fig which will give you the correct answer of 0.18moles