Н3С-С(Br)2-СН(CH3)-СН2-ОН
10 , т.к. 1s22s22p6 -> то есть 10
<span>Ca(OH)2+2HNO3= Ca(NO3)2+2H2O
2Al(OH)3+3H2SO4= Al2(SO4)3+6H2O
Mg(OH)2+2HCl= MgCl2+2H2O
2Fe(OH)3t°= Fe2O3+3H2O
2Cr(OH)3t°=Cr2O3+3H2O
Mn(OH)2t°=MnO+H2O</span>
2S+3O2=2SO3
S+Na=NaS
S+H2=H2S
3S+2Fe=Fe2S3
1)2K+2O2=2K2O
2)K2O+H2O=2KOH
3)KOH+HCl=KCl+H2O
<span>4)KCl+AgNO3=AgCl +KNO3</span>