CaHPO4
Mr(CaHPO4)=40+1+31+4*16=136
W(O)=64/136=0.47=47%
W(H)=1/136=0.007=0.7%
Ca(H2PO4)2
Mr(Ca(H2PO4)2)=40+4*1+2*31+8*16=234
W(O)=128/234=0,55=55%
W(H)=4/234=0.017=1.7%
<span>1)Zn................................................................</span>
А) 5SO3+P2=P2O5 +5SO2
б) 3SO3+H2S =4SO2 +H2O
в) 2SO3+2KI=SO2 +I2+K2SO4
Органика горит на воду и СО2
С5Н10 + О2 ---> СО2 + Н2О;
С5Н12 + О2 ----> СО2 + Н2О;
С5Н8 + О2 ----> СО2 + Н2О;