The melting pоint оf trimethylаmine (tri-methyl-аmine) is -117.0 degrees Celsius, while the melting pоint of propylаmine (propyl-amine) is -83.0 degrees Celsius. Considering that both these molecules have the same molecular formula (NC3H9), how do you explain this difference in melting temperature? In order to receive full points, you must give me a specific answer. Trimethylamine (below) Propylamine (below)