Grams of oxygen to create 36 4
grams of hydrogen reacts with
grams of water.
40
O 32
09
O 8

It has to be b i hope this

Compound with sulfer  is bright red 

(no3)⁻n has oxidation number x,o has oxidation number -2.(x*1 -2*3) charge of the nitrate ion, and we know that charge of the nitrate ion =-1.so,(x*1 -2*3) =-1x-6=-1x=+5answer a. +5.