Question

If a reaction requires 0.185 moles of NaNO3, how many milliliters of 0.453 M NaNO3 are needed?

Answer 1

Molarity is the measure of how many moles has a liter of solution.

It means that it can be used as a conversion factor to find how many liters of solutions are needed.

$0.185mol\cdot\frac{1l}{0.453mol}=0.41l$

Convert the amount of liters to milliliters:

$0.41l\cdot\frac{1000ml}{1l}=410ml$

410ml of the solutions are needed for the required amount of NaNO₃.