3.0Eq
13 in the neutral atom, 10 in the Al3+ ion
Al3+ and CH3COO−
The formula for aluminum oxide is Al2O3: Molar mass =581.77g/mol Al2O3.In one mole Al2O3, there are two moles of Al3+ ions, therefore 2 moles Al3+ x 26.982g/mol Al3+ = 53.964g Al3+ in one mole of Al2O3.GIVEN: mass of Al3+ = 53.964 g Al3+;Molar mass of Al2O3 = 581.77 g Al2O3UNKNOWN: % Al3+EQUATION:% Al3+...=...g Al3+x 100...g Al2O3% Al3+...=...53.964g Al3+x100......=...9.2758% Al3+581.77g Al2O3
Al3 - Aluminum cationCN-Cyanide ion
Al3+ + S2- ------------> Al2S3
Al3+ is isoelectronic with neon with 10 electrons
Aluminium lose 3 electrons and form the cation Al3+.
Al3+
Al3-
Al3+
Al2O3
Al3+