Answer:Check Box 1 and Box 3
Explanation: Formula 1 has (NO3)2 meaning it has 6 oxygen atoms (2x6) while formula 2 has CO3 with only 3 oxygen atoms.
Its essentially the same thing with box 3 with there being 8 hydrogen in formula 2 (NH4)2 and only 4 in formula 5 NH4 by itself
