S=> so2=> so3=> h2so4=na2so4 способ образования если я не

s+o2=so2

2so2+o2=2so3

so3+h2o=h2so4

h2so4+2naoh=na2so4+2h2o

cp=ms/mr*100%  15%=ms/100g + ms *100% | * (ms+ 100g )15*(ms+100g) = 100ms15ms + 1500g = 100ms|-15ms  85ms= 1500g |: 85  ms= 17,64g

tio2 + 2mg = ti + 2mgo