Help me label the equation.. please?

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1

If you need to add 27.50ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?