2NO + O2 = 2NO2 if 1.11 mol O2 reacts with excess NO, how many grams of NO2 should be
produced

Noble gases is far right

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

1) according to the law of conservation of mass ,in all chemical reactions total mass is unchanged

Answer ozone (o3) is made of three atoms of oxygen, it is a molecule;