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« BIOLOGIYA va KIMYO »
2 Aug 2023, 16:52
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Al2O3 va CaO dan iborat 57.6 g aralashma mo'l miqdordagi C da eritildi va olingan gaz 80 g temir(|||)-oksidni metallgacha qaytarishga yetarli bo'lsa Al2O3 molini toping.
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