Physician Orders: Penicillin 500,000 units IM Available: Pen…

Physician Orders: Penicillin 500,000 units IM Available: Penicillin 600,000 units/mL Your colleague asks you to check her calculations before she gives the injection. She has calculated that she should give Penicillin 1.2 mL IM.  Is this the correct dose? If not, what is the correct dose?  Explain the reasoning behind your answer – to convince him/her that you are correct.