Question

Calculate the no of moles and amount in grams of NaOH in 250 cm3 of a 0.100 M of NaOH solution

Answer 1

Number of moles of NaOH in 250cm^3  = 0.1 * 250/1000

                                                                   = 0.025

Mass of NaOH in 250cm^3 = Number of moles * molar mass of NaOH

                                             = 0.025 * 40

                                             = 1


Hope this helps!