Ba2O3 is not a correct formula. The formula should be BaO which is barium oxide. BaO2 is barium peroxide.
The correct formula for iron(ll) bromide is FeBr2.
The correct formula for nitrogen trioxide is NO3.
The correct formula for Barium carbonate is BaCO3.
The correct formula for silver (I) nitrate is AgNO3.
Al2S3
The percentage of water is 14,75 %.
The correct formula for iron(ll) bromide is FeBr2.
The correct formula for Barium carbonate is BaCO3.
Li2S2O8
The correct formula for nitrogen trioxide is NO3.
The correct molecular formula for methylpropane is C4H10.
Al2S3
The correct formula for silver (I) nitrate is AgNO3.
NF3
The correct formula for gallium oxide is Ga2O3.
The copper(II) fluoride has the formula CuF2.
NF3 is the correct formula for nitrogen trifluoride.