پاسخ : واحد دالتون
دوستان ي خورده انكليسي مي نويسم برا تقويت زبا ن تون....!:4:
A dalton is a unit of mass .,defined as 1/12 the mass of a carbon -12 nucleus. It's also called the atomic mass unit, abbreviated as either "amu" or "u". You can convert kg into using this conversion factor:
1u=1.6605655(86)*10^-27 kg