х л 40г
2Mg+O2=2MgO х=22.4*40/80=11.2 <em>литров</em>.
22.4 л 80г
<em>Ответ: 11.2 литров.</em>
1) 300:100*8=24(г)
2)24+10=34(г)
3) 34:310=0,11=11%
2CH₃-CH₂-COOH + Mg(OH)₂ = (CH₃-CH₂-COO)2Mg + 2H₂O
CH₃-COH + 2[Ag(NH₃)₂]OH = 2Ag + 4NH₃ + H₂O + CH₃COOH
C₂H₅COOH + C₄H₉OH = C₂H₅COOC₄H₉ + H₂O
HCOH + H₂ = CH₃OH
4
2C₃H₇Cl + 2Na = C₆H₁₄ + 2NaCl
C₃H₇Cl + NaOH(водный) = C₃H₇OH + NaCl
C₃H₇OH = C₂H₅COH + H₂
C₂H₅COH + 2Cu(OH)₂ = C₂H₅COOH + Cu₂O + 2H₂O
C₂H₅COOH + CH₃OH = C₂H₅COOCH₃ + H₂O