Explore molecular dynamics and phase transitions in this comprehensive Ukrainian-language seminar lecture from the "Problems of Theoretical Physics" series, focusing on liquid-gas phase transitions. Delve into advanced theoretical physics concepts as presented to students, postgraduate researchers, and scientific staff. Learn about the fundamental principles governing molecular dynamics and their role in understanding phase transitions between liquid and gas states. Part II of the lecture series builds upon previous foundations to provide deeper insights into this critical area of theoretical physics research.