Odpowiedzi

2009-12-13T00:43:56+01:00

tlenki:
Fe₂O₃--> 2*56u+3*16u= 160u
NO--> 14u+16u= 30u
Na₂O--> 2*23u+ 16u= 59u
MgO--> 24u+ 16u= 40u
ZnO-->65u+ 16u= 81u

zasady:
NaOH--> 23u+ 16u+1u= 40u
Al(OH)₃--> 27u+ 3*16u+ 3*1u= 78u
Mg(OH)₂--> 24u+2*16u+ 2*1u= 58u
KOH--> 39u+ 16u+ 1u= 56u
Ca(OH)₂--> 40u+ 2*16u+ 2*1u= 74u

sole:
Na₂CO₃--> 2*23u+ 12u+3*16u=  106u
NaCl--> 23u+ 35,5u= 58,5u
Al₂(SO₄)₃--> 2*27u+ 3*32u+ 12* 16u= 246u
KNO₃--> 39u+ 14u+ 3*16u= 101u
PbCl₂--> 207u+ 71u= 278u

2009-12-13T01:00:31+01:00
Tlenki
1. SO₂ =32u + 2*16u =64u
2. CO₂ = 12u + 2*16u=44u
3. P₄O₁₈ = 4*31u +10*16uu=284u
4. MgO = 24u + 16u= 40u
5. K₂O = 2*39u +16u=94u

Zasady
1. CsOH = 133u +16u + 1u = 150u
2. BaOH = 137u +16u + 1u = 154u
3. KOH =39u +16u + 1u = 56u
4. Mg(OH)₂ = 24u + 2*16u + 1u = 57u
5. Sr(OH)₂ =88u + 2*16u + 1u = 121u

Sole
1. CuS = 63,5 + 32u = 95,5u
2. Mg₃(PO₄)₂ = 3*24u + 2*31 u + 8*16u = 262u
3. KCl = 39u + 35,5u = 74,5u
4. AgNO₃ =108u + 14u + 3*16u = 170u
5. BaSO₄ = 137u + 32u + 4*16u = 233u