SO2
Mr(SO2)=)32+16*2=64
W(S) = nAr(S) : Mr(SO2) *100% = 1*32:64 *100%= 50%
SO3
Mr(SO3) =32+48=80
W(S)= nAr(S) :Mr(SO3) *100% = 32:80 *100%= 40%
M(CaCl2) = 500 r*0.2 = 100 r
А) m"(p.CaCl2) = 500 r+100 r = 600 r
ω"(CaCl2) = 100 r/600 r = 0,1667 або 16,67%
Б)
m"(p. CaCl2) = 500 r + 100 r = 600 r
m"(CaCl2) = 100 r + 100 r = 200 r
ω"(CaCl2) = 200 r/600 r = 0,3333 або 33,33%
9-2
10-2
<span>//минимум-20-символов\\</span>
а)KOH+HNO3=KNO3+H2O
б)6KOH+ P2O5= 2<span>K3PO4 + 3H2O</span>
в)2KOH+Cu(NO3)2=Cu(OH)2+2KNO3
2BrCl+H2So4=Br2So4+2HCl
2NaBr+Cl2=2NaCl+Br2
Br2+2Na=2NaBr