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Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]
[15] k 1 is the rate constant for chemical uptake from water at the respiratory surface (L*kg −1 *d −1). [15] C WD is the chemical concentration dissolved in water (g*L −1 ). [ 15 ] k 2 ,k E ,k G ,k B are rate constants that represent excretion from the organism from the respiratory surface, fecal excretion, metabolic transformation, and ...
The first formal Sunday School in the LDS Church was held on December 9, 1849, in Salt Lake City under the direction of Richard Ballantyne, [2] a former Sunday school teacher in the Relief Presbyterian Church in Scotland. Lacking a suitable building to hold the meeting in, Ballantyne invited his students into his own home; approximately thirty ...
August 25, 2024 at 4:30 AM. Museum of the Bible CEO calls out today's 'divisiveness,' need for 'return to faithfulness'. "If it does not please you to serve the Lord, decide today whom you will ...
Crotonic acid has 4 carbons, is included in croton oil, and is a trans-2-mono-unsaturated fatty acid.C 3 H 5 CO 2 H, IUPAC organization name (E)-but-2-enoic acid, trans-but-2-enoic acid, numerical representation 4:1, n-1, molecular weight 86.09, melting point 72–74 °C, boiling point 180–181 °C, specific gravity 1.027.
Low cycle fatigue (LCF) has two fundamental characteristics: plastic deformation in each cycle; and low cycle phenomenon, in which the materials have finite endurance for this type of load. The term cycle refers to repeated applications of stress that lead to eventual fatigue and failure; low-cycle pertains to a long period between applications.
Stockport Sunday School. Coordinates: 53°24′28″N 2°09′26″W. The Stockport Sunday School is a Sunday school in Stockport, Cheshire, England. Founded in 1784, it had become the largest Sunday school in the world by 1859. [1] The original school was situated on London Square, Wellington Street, Stockport, behind the town hall.