Answer:
nếu có 40g dung dịch NaOH 20% phairn dùng hết bao nhiêu gam dung dịch HCl 25% để trung hoà
Alterations to the electron-based ionic or covalent bonds between ions or atoms happen during a chemical change. Such changes result in one or more new substances with different physical and chemical properties. This type of change stands in contrast to physical changes which, despite sometimes closely resembling chemical changes, only produce a change in physical properties.
One-twelfth the mass of a carbon-12
Answer:
Is the penultimate shell of the corresponding outer most atomic radius of group 14 member
***Penultimate shell is the second shell below the outer most shell which is the largest
Analogus Structures is the answer
