# Concentrations: density, relative density, percentage, molarity, mass concentration,

## Tutorial 2

Use the following schematic "lattice" and → the definitions to resolve the following exercise:

Exercise
Calculate the number of moles of nitric acid in $200 \; mL $ of a $ 0.40 \frac{mol}{L} $ solution
Solution (Click):
Scheme and Formula:
..........
Calculation:
..........$n_{so}=[so]\cdot V_S$ $=$ $0.40\cdot 0.200 = 0.08 \; mol$