The availability of pencillin V is 0.80 g/mL
                                          Â
= 0.80 x103 mg
/mLÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
since 1 g = 103 mg
                                          Â
= 800 mg/mL
So 800 mg contained in 1 mL of the solution
   5600 mg contained in M mL of the solution
              Â
M = (5600x1) / 800
                  Â
= 7 mL
Therefore the required volume of penicillin solution is 7 mL
