Homework help! 2 questions
1) A 0.0125 mol sample of a metal combines with 0.200g of oxygen to produce a metal oxide. Determine the empirical formula of the metal oxide.
2) Manganese ions with the following charges are known: Mn2+, Mn3+ and Mn4+.
Knowing that the formula and ionic charge of an oxalate ion is C2O4 2-, write the chemical formula and name for the compound wherein each of these forms of manganese is combined with oxalate ion.