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8-sinf Kimyo olimpiada №3

Yanvar 3, 2023

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8-sinf Kimyo olimpiada №3

30.12.2022 yil oo.uzedu.uz

Online olimpiada savollari!

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25g 16 % li AlCl₃25 g 16% li NaOH eritmalari aralashtirilganda hosil bo’lgan cho’kma filtrlandi va qizdirildi . Bunda hosil bo’lgan qattiq qoldiqning massasin (g) aniqlang

1.52

2.34

1.17

1.014

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Mol nisbatlari 5:2 bo’lgan CD₄ va H₂O tarkibidagi neytronlar soni ayirmasi5 ga teng bo’lsa aralashmaning moli yig’indisini toping.

3,5

1,75

1,55

1,25

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