3al + 3nh4clo4 → al2o3 + alcl3 + 3no + 6h2o

how many moles of water are produced from 373 mol al?

Once we have moles, we can use mole-to-mole ratio from the balanced equation to convert from one molecule to the other. 

3 mol of Al= 6 mol of H₂O

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

Ithink 2 is the correct