Search results
Results from the WOW.Com Content Network
Manganese dioxide is the inorganic compound with the formula MnO 2.This blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore of manganese and a component of manganese nodules.
Manganism. Manganism. The element manganese in the periodic table. Specialty. Occupational medicine. Diagnostic method. - determination of the concentration of manganese in the blood. - biochemical blood test: determination of the activity of ALT, ACT, LDH, creatine phosphokinase (CPK); - indicators of protein metabolism, - concentrations of ...
Manganese is a chemical element; it has symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese was first isolated in the 1770s. It is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels.
This is the list of extremely hazardous substances defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. § 11002).The list can be found as an appendix to 40 CFR 355. [1]
1.5 V. An alkaline battery (IEC code: L) is a type of primary battery where the electrolyte (most commonly potassium hydroxide) has a pH value above 7. Typically these batteries derive energy from the reaction between zinc metal and manganese dioxide. Compared with zinc–carbon batteries of the Leclanché cell or zinc chloride types, alkaline ...
Toxic heavy metal. A 25-foot (7.6 m) wall of coal fly ash from the release of 5.4 million cubic yards ash slurry into the Emory River, Tennessee, in 2008. [1] The river water was contaminated with toxic metals including arsenic, copper, barium, cadmium, chromium, lead, mercury, nickel, and thallium. [2] Cleanup costs may exceed $1.2 billion.
The ratio of manganese dioxide and carbon powder in the cathode paste affects the characteristics of the cell: more carbon powder lowers internal resistance, while more manganese dioxide improves storage capacity. [7] Flat cells are made for assembly into batteries with higher voltages, up to about 450 volts.
Manganese oxide is any of a variety of manganese oxides and hydroxides. [1] These include. Manganese (II) oxide, MnO. Manganese (II,III) oxide, Mn 3 O 4. Manganese (III) oxide, Mn 2 O 3. Manganese dioxide, MnO 2. Manganese (VI) oxide, MnO 3. Manganese (VII) oxide, Mn 2 O 7.