Tính nồng độ mol/lít của ion H- có trong 100ml dung dịch Ca(OH)2 có chứa 0,74 gam chất tan

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic

Answeramino acids;

Answer heart of american                  live in harmony                    hillsides of orchards                    blaze of color                    backdrop of pines;