Ответ:
8 Li + 10 HNO3 = 8 LiNO3 + 3 H2O + NH4NO3
14
Na₂O->Na₂CO₃->NaNO₃->NaNO₂
1)Na₂O+CO₂=Na₂CO₃
2)Na₂CO₃+2HNO₃=2NaNO₃+H₂O+CO₂↑
3)2NaNO₃=t=2NaNO₂+O₂↑
15
6KOH+Fe₂(SO₄)₃=2Fe(OH)₃↓+3K₂SO₄
KOH+HCl=KCl+H₂O
2KOH+SO₃=K₂SO₄+H₂O
6KOH+Ca₃(PO₄)₂=3Ca(OH)₂↓+2K₃PO₄
14
CaS->Ca(NO₃)₂->Ca(NO₂)₂->CaSO₄
CaS+2HNO₃=Ca(NO₃)₂+H₂S↑
Ca(NO₃)₂=Ca(NO₂)₂+O₂↑
Ca(NO₂)₂+H₂SO₄=CaSO₄↓+2HNO₂
15
2H₃PO₄+3Ca=Ca₃(PO₄)₂+3H₂↑
H₃PO₄+3KOH=K₃PO₄+3H₂O
2H₃PO₄+3MgCl₂=Mg₃(PO₄)₂↓+6HCl
2H₃PO₄+3K₂O=2K₃PO₄+3H₂O
14
NaOH->Na₂CO3->NaCl->NaNO₃
2NaOH+CO₂=Na₂CO₃+H₂O
Na₂CO₃+2HCl=2NaCl+H₂O+CO₂↑
NaCl+AgNO₃=NaNO₃+AgCl↓
15
3KOH+Al(NO₃)₃=3KNO₃+Al(OH)₃↓
2KOH+Zn(OH)2=K₂[Zn(OH)₄]
2KOH+CuCl₂=2KCl+Cu(OH)₂↓
14
Ca(OH)₂->Ca(NO₃)₂->O₂->MgO
Ca(OH)₂+2HNO₃=Ca(NO₃)₂+2H₂O↑
Ca(NO₃)₂=Ca(NO₂)₂+O₂↑
2Mg+O₂=2MgO
15
NaOH+HNO₃=NaNO₃+H₂O
2NaOH+SO₂=Na₂SO₃+H₂O
2NaOH+CuCl₂=2NaCl+Cu(OH)₂↓
Разб
Cr + H2SO4 = CrSO4 + H2 стрелка вверх
Концентрированная
<span>2Cr + 6H2SO4(конц. ) = Cr2(SO4)3 + 3SO2 стрелка вниз + 6H2O</span>
1) m=n*M
m=0.3 моль* 32 г/моль = 9.6г
N=
*n
N=6.02*10^23*0.3 = 1.806*10^23
2) m=n*M
m=<span>1,3 моль*154г/моль = 200.2г
N=</span>
<span>*n
N=6.02*10^23*1.3 = 7.826*10^23
3) </span>m=n*M<span>
m=</span><span>2 моль*99г/моль = 198г
N=</span>
<span>*n
N=6.02*10^23*2 моль = 1.204*10^24 </span>