M(H2O) = 180г
n=m/M =180/18=10 моль
N = n*Na =10*6*10^23 = 60*10^23
m(HCl) = M*n = 36,5*10=365г
<span>Fe+<span>2<span>HCl</span></span> → <span>FeCl2</span>+H2
</span><span><span>Cu</span>+<span>2<span>HCl</span></span> → <span>CuCl2</span>+<span>H2
</span></span>
<span>Карбонат кальция и соляная кислота: </span>
<span>CaCO3 + 2HCl = CaCl2 + H2O + CO2 </span>
<span>CaCO3 + 2H(+) + 2Cl(-) = Ca(2+) + 2Cl(-) + H2O + CO2</span>