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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

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Mis (II) sulfatda misning massa ulushi ko’pmi yoki kislorodnikimi?Ar(Cu)=64

Kislorodni

Teng

Misniki ikki baravar ko’p

Misni

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20.4 g H₂S mo’l miqdorda kislorodda yondirildi. Olingan gaz o’yuvchi natriy bilan reaksiyasida nordon tuz massasi o’rta tuz massasidan 16.4 g ga ko’p bo’lsa, nordon tuz massasini (g) da aniqlang.

20

31,2

41,6

10,4

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B

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B

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B

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A

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D

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B

D

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C

A

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B

C

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A

B

D

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C

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