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Усны хатуулаг: юу хэмждэг, төрөл, ундны усны норм
байнгын (карбонат бус). Нийт хөшүүн байдлын томъёо нь: Жо = [Ка2+] + [Мг2+] = Жк + Жnk Усны хатуулгийн ангилал Карбонатын хатуулаг нь бикарбонат Ca (HCO 3) 2 ба Mg (HCO 3) 2. Тэдгээрийг уусмалаас амархан арилгаж, буцалгахад уусдаггүй тунадас үүсгэдэг.
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Sắt(III) oxide – Wikipedia tiếng Việt
Công cụ Sắt (III) oxide (công thức Fe2O3) là một oxide của sắt. Nó có khối lượng mol 159,6922 g / mol, hệ số giãn nở nhiệt 12,5×10 −6 /℃, nhiệt độ nóng chảy 1565 ℃ . Về mặt hóa học, sắt oxide cũng thuộc nhóm oxide lưỡng tính như nhôm oxide. Fe 2 O 3 không phải là một oxide dễ chảy, nó là một oxide khó chảy.
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Хатуулаг — Википедиа нэвтэрхий толь
Хатуулаг нь механикийн эсэргүүцэл бөгөөд энэ нь ямар нэгэн биет рүү бодис механик үйлчлэлээр нэвтлэн орохыг, эсэргүүцэхийг хэлдэг. Хатуулагийг хооронд нь ямар нөлөөллөөс хамаарч байгаагаар нь ялгана. Тиймээс хатуулаг нь зөвхөн хатуу биетийг эсэргүүцэх биш харин зөөлөн болон …
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Iron(III) Oxide
Fe 2 O 3 is the chemical formula of Iron (III) oxide which has three oxygen atoms, and two iron atoms. The oxidation state of Fe 2 O 3 is +3. The bond formation between oxygen and iron depends on the difference in electronegativity between these two atoms. Iron (Fe) is metal whereas oxygen (O 2) is non-metal. Therefore, such bonds are called an ...
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Frontiers | Structural Evolution of α-Fe2O3(0001) Surfaces Under
The precise determination of the surface structure of iron oxides (hematite and magnetite) is a vital prerequisite to understand their unique chemical and physical properties under different conditions. Here, the atomic structure evolution of the hematite (0001) surface under reducing conditions was tracked by polarization-resolved infrared …
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Fe2o3 | Sigma-Aldrich
Showing 1-5 of 5 results for "fe2o3" within Products. Products Building Blocks Explorer Genes Papers Technical Documents Site Content Chromatograms. Filter & Sort. All Photos (5) Iron(III) oxide. Synonym(s): Ferric oxide. Empirical Formula (Hill Notation): Fe 2 O 3. CAS No.: . Molecular Weight: 159.69. EC No.: 215-168-2. Compare ...
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