M(C12H22O11)=75*0.1=7.5 г.
ω2(C12H22O11)=(7,5/75+15)*100\%=8,3\%
H3C-HC=CH-CH3+HCl = <span>H3C-ClHC-CH2-CH3
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По таблице Менделеева M(K2S)=39*2+32=110
2NaCl=2Na+Cl2-электролиз
2Na+2H2O=2NaOH+H2
2NaOH+SO3=Na2SO4+H2O;(2OH(-) +SO3=SO4(2-) +H2O)
Na2SO4+BaCl2=BaSO4+2NaCl; (Ba(2+) +SO4(2-)=BaSO4)
NaCl(тв.)+HNO3=NaNO3+HCl(газ);-NaCl+H(+) =Na(+) +HCl
2С2H5OH+2Na=2C2H5ONa+H2
<span>C6H8O7 + 3NaHCO3 = 3CO2 + 3H2O + Na3C6H5O7</span>