How many grams of naoh (mw = 40.0) are there in 200.0 ml of a 0.150 m naoh solution?

First, determine the number of moles of NaOH by multiplying the volume given with the molarity. 
                 n = (200 mL)(1 L/1000 mL)(0.150 mole/L)
                   n = 0.03 moles

Then, multiply the calculated number of moles above with the given molar weight. 

               m = (0.03 moles)(40 g/mol)
                   m = 1.2 g

1.2 grams of NaOH

Is there a diagram/picture you can provide? it seems this question goes along with a