Зробити перетворення - h2-h2o-o2-cao-ca(no3)2-hno3-mg(no3) 2-mgoh-mgo-mgcl2-hcl-h2o

2h2 + o2 = 2h2o

2h2o =2 h2 + o2

2ca + o2 = 2cao

cao + 2hno3 = ca(no3)2 + h2o

ca(no3)2+ h2so4 = caso4 + 2hno3

mgo + 2hno3 = mg(no3)2 + h2o

mg(no3)2 +2 naoh = mg(oh)2 + 2nano3

mg(oh)2 = mgo + h2o

mgo + 2hcl = mgcl2 + h2o

mgcl2 + h2so3 = mgso3 + 2hcl

hcl + naoh = nacl + h2o

3mno2 + 4al = 2al2o3 + 3mn

n(mno2)= 84/(55+32)=0.9655 моль

n(mn)= n(mno2)=0.9655 моль m(mn)= 0.9655*55=53.1 гр

хотя на самом деле

4mno2 = 2mn2o3 + o2

mn2o3 + 2al = 2mn =al2o3

2ch3ch2cooh + 2na = 2ch3ch2coona + h2

2ch3ch2cooh + ba(oh)2 = (ch3ch2coo)2ba + 2h2o

2ch3ch2cooh + li2o = 2ch3ch2cooli + h2o

2ch3ch2cooh + na2s = 2ch3ch2coona + h2s

ch3ch2cooh + c2h5oh =  ch3ch2cooc2h5 + h2o