MilfordMacBain
أنشأ الصفحة ب'<br>The formula mass of urea (NH₂CONH₂) is calculated by adding the atomic masses of its constituent elements: nitrogen (N), hydrogen (H), carbon (C), and oxygen (O<br>Read more<br><br><br><br><br><br><br><br><br><br>Chemistry<br><br><br><br><br><br><br><br><br><br>How did leucippus and democritus use atoms to explain different physical properties?<br><br><br>Asked by Anonymous<br><br><br><br>Leucippus and [https://telegra.ph/A-Lifetime-of-Light-One-Mans-Glowi...'