The test for sulfate ion (SO4 2-) involved the addition of aqueous barium nitrate (Ba(NO3)2). Name another substance that would have been equally effective and explain your reasoning.

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

If an atom has 12 protons and 13 neutrons

What do electromagnetic waves carry? how are they produced through which media can they move? where do they transfer energy? what do they not transfer? what do mechanical waves carry? how are they produced? through which media can they move? where do they transfer energy? what do they not transfer?