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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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Quyidagi moddalarning nechtasining molekulasida 10 ta atom mavjud emas 1) malaxit 2) ammoniy gidrofosfat 3) dolomit 4) aluminiy digidroksosulfat 5) kalsiy formiat 6) kaliy geksaxlorferrat (III)7) xrom(III)xlorat

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13 g qattiq holatdagi ishoriy metall ftoridiga kons.sulfat kislota ta’sir ettirilganda ajralgan gaz Ca(OH)₂ orqali o’tkazilganda 19.5 g cho’kma hosil bo’ldi. Metallni aniqlang

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