If 42.0 g of NaOH (MM = 40.00 g/mol) are added to a 500.0 mL volumetric flask, and water is added to fill the flask, what is the concentration of NaOH in the resulting solution?

? you expect us to answer this? ? this is your schoolwork, i don't think we can with this, i think it would considering being

i think slash and

catya your not at all which answer i've seen you do this on another question!