Question

посчитайте масовую долю CaSO3 умоляю

Answer 1

Mr(CaSO3) = 40+32+48=120
Ar(Ca) =40
w(Ca) = 40/120*100=33.3 %
Ar(S) =32
w(S)=32/120*100=26.7 %
Ar(O) =16
w(O)=16*3/120*100 =40%

Answer 2

последнее

Answer 3

Mr(CaS4O6) = 40+4*32+6*16=264

Answer 4

w(Ca)=40/264*100=15.2%

Answer 5

w(S)=128/264*100=48.5%

Answer 6

w(O)=96/264*100=36.3%