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2 KMnO 4 + 2 H 2 SO 4 → Mn 2 O 7 + H 2 O + 2 KHSO 4. Mn 2 O 7 can react further with sulfuric acid to give the remarkable manganyl(VII) cation MnO + 3, which is isoelectronic with CrO 3: Mn 2 O 7 + 2 H 2 SO 4 → 2 [MnO 3] + [HSO 4] − + H 2 O. Mn 2 O 7 decomposes near room temperature, explosively so above 55 °C (131 °F). The explosion ...
It may refer more specifically to the following manganese minerals: Birnessite, (Na,Ca) 0.5 (Mn IV,Mn III) 2 O 4 · 1.5 H 2 O; Buserite, MnO 2 ·nH 2 O; Hausmannite, Mn II Mn III 2 O 4; Manganite, Mn III O(OH)
The most stable are 53 Mn with a half-life of 3.7 million years, 54 Mn with a half-life of 312.2 days, and 52 Mn with a half-life of 5.591 days. All of the remaining radioactive isotopes have half-lives of less than three hours, and the majority of less than one minute.
MMT has been used in Canadian gasoline since 1976 (and in numerous other countries for many years) at a concentration up to 8.3 mg Mn/L (though the importation and interprovincial trade of gasoline containing MMT was restricted briefly during the period 1997–1998) [3] [4] and was introduced into Australia in 2000. It has been sold under the ...
A palindrome is a word, number, phrase, or other sequence of symbols that reads the same backwards as forwards, such as the sentence: "A man, a plan, a canal – Panama". ". Following is a list of palindromic phrases of two or more words in the English language, found in multiple independent collections of palindromic phra
The crystal structure of manganese(II) sulfide is similar to that of sodium chloride.. The pink color of MnS likely results from poor coupling between the lowest energy unoccupied Mn orbitals, resulting in discrete states rather than a delocalized band.
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MnO 2 + H 2 → MnO + H 2 O MnO 2 + CO → MnO + CO 2. Upon heating to 450 °C, manganese(II) nitrate gives a mixture of oxides, denoted MnO 2−x, which can be reduced to the monoxide with hydrogen at ≥750 °C. [6] MnO is particularly stable and resists further reduction. [7] MnO can also be prepared by heating the carbonate: [8] MnCO 3 → ...