Kimyo 8-sinf I chorak 10% nitrat kislota hosil qilish uchun 30%50g nitrat kislotaga qancha suv qo’shish kerak?


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Kimyo fanidan 8 – sinf  I chorak





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19. proton

20. 64 g/mol 64g/6,02*1023

21. P2O5 / Ca(H2PO4)2 *2H2O = 142/270=53%

22.NaCl,KCl,Na2SO4

23.S=9 P=18

24. suyuqlanmasi yoki eritmasi elektr to’kini o’tkazmaydi

25.1,3 =28

6,7=32

Kimyo__8_–_sinf_II_-_chorak'>Kimyo

8 – sinf   II - chorak





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19.H2O + F2 HF+O2

20. 4;+S , 4;+S

21.114, 2,6

22.Neytral

23.H2S+O2 SO2+H2O

H2S+O2 S+H2O

24. 1,3,4

25.0,5; 0,5

Kimyo

8 – sinf  III - chorak





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19.4,214*1023

20.Tuboka,Xojaikon

21.Zn(OH)2+NaOH=Na2[Zn(OH)4]

Zn(OH)2+HCl=ZnCl2+H2O

22. 3J2+10HNO3=6HJO3+10NO+2H2O

23.24,65

24. 1,3,5,7



25.OH-
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