Explain how you can experimentally determine whether titanium dioxide, TiO2, is an ionic solid or a covalent network lattice?

As a part of an experiment a student burns propane to produce carbon dioxide and water she remembers that she must follow the law conservation of matter when writing a balanced chemical equation which of these equation adheres to the law of conservation of matter

V1t2 = v2t1 is an expression of who’s law

Hey can you me with this i really need y’all