Stoichiometry

• 2+ ions include, Mg, Ca, Ba, Fe(II), Cu(II), Zn and Pb
• 1+ ions include H, Na, K,NH4
• 3+ ions include Al, Fe(III).
• -1 ions include Cl, CH3COO, HCO3, OH, NO3.
• -2 ions include O, CO3, SO4, S.
• -3 ions include PO4
• n = m/M
• n (amount of particles in moles) = m (mass of substance in grams) / M (molar mass of atoms in g mol^-1)