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8-sinf Kimyo olimpiada №3

Yanvar 3, 2023

223 Ko'rishlar 0

SaqlashSaqlanganOlib tashlandi 0

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Vaqtingiz tugadi!

8-sinf Kimyo olimpiada №3

30.12.2022 yil oo.uzedu.uz

Online olimpiada savollari!

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11,2 l (n.sh) tarkibida 42,14· 10²³elektron tutgan gazni formulasini toping.

CO

NO

Н₂S

NH₃

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Odam o’pkasida havo pufakchalari (alveolalar)ning 700 millioniga 3l havo sig’adi. 5ta alveoladagi azot molekulalari sonini hisoblang (azotning havodagi hajmiy ulushi=0.8)

7,5*10¹⁵

7*10¹³

5,7*10¹⁶

4,6*10¹⁴

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