So’z boshi. Ilm har sohada do’st, hayot yo’llarida tayanch, yolg’izlik damlarida yo’ldosh, baxtiyor daqiqalarda rahbar, qayg’uli onlarda madadkor, odamlar orasida zebu-ziynat, dushmanlarga qarshi kurashda quroldir

125. Alkogolyat massasini aniqlashga oid.

1. 
   128 g etil spirti eritmasida spirtning mol ulushi 50 % ga teng. Shu eritmaga 69 g natriy metali qo’shilganda hosil bo’lgan alkogolyatning massasini (g) toping.
   

A)136 B)68 C)34 D)204

2. 
   234 g etil spirti eritmasida spirtning mol ulushi 75 % ga teng. Shu eritmaga 46 g natriy metali qo’shilganda hosil bo’lgan alkogolyatning massasini (g) toping.
   

A) 136 B)170 C)68 D) 34

3. 
   146 g butil spirti eritmasida spirtning mol ulushi 20 % ga teng. Shu eritmaga 195 g kaliy metali qo’shilganda hosil bo’lgan alkogolyatning massasini (g) toping.
   

A) 112 B)56 C)168 D)560

4. 
   111 g propil spirti eritmasida spirtning mol ulushi 10 % ga teng. Shu eritmaga 33,25 g litiy metali qo’shilganda hosil bo’lgan alkogolyatning massasini (g) toping.
   

A)41 B)20.5 C) 16.5 D)33

5. 
   138 g butil spirti eritmasida spirtning mol ulushi 50 % ga teng. Shu eritmaga 78 g kaliy metali qo’shilganda hosil bo’lgan alkogolyatning massasini (g) toping.
   

A)168 B)84 C)112 D) 56

6. 
   198 g propil spirti eritmasida spirtning mol ulushi 75 % ga teng. Shu eritmaga 46 g natriy metali qo’shilganda hosil bo’lgan alkogolyatning massasini (g) toping.
   

A)164 B) 82 C)123 D)246

7. 
   157 g butil spirti eritmasida spirtning mol ulushi 80 % ga teng. Shu eritmaga 85,5 g rubidiy metali qo’shilganda hosil bo’lgan alkogolyatning massasini (g) toping.
   

A) 79.25 B)118.875 C)158.5 D)237.75

8. 
   324 g propil spirti eritmasida spirtning mol ulushi 60 % ga teng. Shu eritmaga 28 g litiy metali qo’shilganda hosil bo’lgan alkogolyatning massasini (g) toping.
   

A)264 B) 66 C)137 D)132

9. 
   265 g pentil spirti eritmasida spirtning mol ulushi 50 % ga teng. Shu eritmaga 140,4 g kaliy metali qo’shilganda hosil bo’lgan alkogolyatning massasini (g) toping.
   

A)275.2 B)157.5 C)315 D) 138.6

10. 
    50 g etil spirti eritmasida spirtning mol ulushi 25 % ga teng. Shu eritmaga 12,25 g litiy metali qo’shilganda hosil bo’lgan alkogolyatning massasini (g) toping.
    

A)26 B)19.5 C)13 D)39