<span><span>4P</span>+<span>5<span>O2</span></span> → <span>2<span>P2O5
</span></span></span><span><span>P2O5</span>+<span>3<span>H2O</span></span> → <span>2<span>H3PO4
</span></span></span><span><span>H3PO4</span>+<span>3<span>NaOH</span></span> → <span>Na3PO4</span>+<span>3<span>H2<span>O
</span></span></span></span>
Cu(NO3)2 + 2NaOH = Cu(OH)2 + 2NaNO3
Cu(2+) + 2NO3(-) + 2Na(+) + 2OH(-) = Cu(OH)2 + 2Na(+) + 2NO3(-)
Cu(2+) + 2OH(-) = Cu(OH)2
2H₂ + O₂ = 2H₂O
n(H₂)=V÷22,4=11,2÷22,4=0,5моль
n(H₂O)=n(H₂)
m(H₂O)=18×0,5=9г
СH3COH + H2 -> CH3-CH2-OH ( p,kat)
CH3-CH2-OH + CH3COOH = CH3COOCH2-CH3 + H2O (H)
CH3COOCH2-CH3 + H2O = CH3COOH + CH3-CH2-OH (H)
12C - протонов - 6, нейтронов 12-6 = 6
13С - протонов -6, нейтронов 13-6 = 7
14N- протонов -7, нейтронов 14-7=7
15N -протонов -7, нейтронов 15-7=8