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Kimyo milliy sertifikat
400 gr 82% li sulfat kislota eritmasiga 500 g sulfat angidrid shimdirilganda hosil boʻladigan oleum konsentratsiyasini toping?
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MILLIY SERTIFIKAT, DTM testlari,tahlili va ular darajasidagi yangi savollar @kimyoustasi kanalida MANZIL
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@kimyoustasi
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