H2 +S = H2S
n H2S = 10.2 / 34 = 0.3 моль
c = n / V = 0.3 / 100 = 0.003 моль / л
v = c / t = 0.003 / 10 = 0.0003
ответ в
<h2><em>N₂O₅ + H₂O → 2HNO₃. </em></h2><h2><em>N₂O₅ + CaO → Ca(NO₃)₂. </em></h2><h2><em>N₂O₅ + 2NaOH → 2NaNO₃ + H₂O. </em></h2>
BaO+2HNO3=Ba(NO3)2+H2O
n(HNO3)=40/63=0,635 моль
n(BaO)/1=n(HNO3)/2
n(BaO)=0,635/2 моль = 0,3175 моль
m(BaO)=0,3175 * (137+16)= 48,5775 грамм
<span><span>4<span>K</span></span>+<span>O2 = </span><span>2<span>K2<span>O
K2O+H2O=2KOH
KOH+HCl=KCl+H2O
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