Calculate the approximate mass of naoh required to prepare 500 ml of a 0.15 m naoh solution

Formula for Molarity is given as,

                                      Molarity  =  moles / Volume of Solution in L     (1)
Also,
                                         Moles  =  mass / M.mass

Putting value of mole in eq. 1,

                                      Molarity  =  (mass / M.mass) / Vol
Solving for mass,
                                          Mass  =  Molarity × M.mass × Vol
Putting Values,
                                          Mass  =  0.15 mol/L × 40 g/mol × 0.5 L

                                          Mass  =  3 g
Result:
            Weight 3 g of NaOH, add it to a 500 ml volumetric flask, and add distilled water to the point of 500 ml. The resulting solution will be 0.15 M.

Ch4 is nonpolar and insoluble in water. since all of the hydrogen atoms are evenly spread around the carbon atom even through the c h bond is polar all the poles cancel each other out.