Ba(OH)_2 and BaO_2H_2 are both chemical formulas for barium hydroxide. The difference lies in the way the atoms are arranged in the molecule. Ba(OH)_2 indicates that there are two hydroxide ions (OH^-) attached to one barium ion (Ba^2+). On the other hand, BaO_2H_2 shows that there is one oxygen atom (O) and two hydroxide ions attached to one barium ion.
The subscript in a chemical formula represents the number of atoms of a particular element in a molecule. In the case of Al(NO_3)_3, there are three nitrate ions (NO_3^-) attached to one aluminum ion (Al^3+). Therefore, the subscript 3 indicates that there are three nitrate ions present in the molecule.
AlN_3O_9 is a chemical formula for aluminum nitrate. The elements are arranged in the molecule as follows: one aluminum ion (Al^3+) is bonded to three nitrogen atoms (N), and each nitrogen atom is bonded to three oxygen atoms (O). Therefore, the molecule contains a total of nine oxygen atoms and three nitrogen atoms.
Al(NO_3)_3 and AlN_3O_9 are both chemical formulas for aluminum nitrate, but the difference lies in the way the atoms are arranged in the molecule. Al(NO_3)_3 indicates that there are three nitrate ions (NO_3^-) attached to one aluminum ion (Al^3+), while AlN_3O_9 shows that there is one nitrogen atom (N) and three oxygen atoms (O) attached to each of the three aluminum ions.
The charge of an ion can be determined by looking at its position on the periodic table. Elements on the left side of the periodic table tend to lose electrons and have a positive charge, while elements on the right side tend to gain electrons and have a negative charge. Additionally, the number of valence electrons can also be used to determine the charge of an ion. For example, aluminum (Al) has three valence electrons, so it will have a charge of +3 when it forms an ion.