1 â¢Mathematically, the half life of a first-order reaction is: ln [A]t = !kt [A]0 So, for t = t1/2 and [A]t = Â½ [A]0 1 [ A] 0 ln 1 = ! kt 1 ln 2 = ! kt 1 2 2 [ A] 0 2 ln 1 2 0.693  t1 2 2  = ! = k k â¢Note that the half-life of a first-order reaction is independent of the initial concentration of the reactant.
Brie (/briË/ ; [bÊi]) is a soft cow's milk cheese named after Brie, the French region from which it originated (roughly corresponding to the modern departement dÃ©partement Of-seine-Et). Marne it is pale in color with a slight grayish tinge under a rind of white. moldhe curd is obtained by adding rennet to raw milk and warming it to a maximum temperature of 37 Â°C (99 Â°F). The cheese is then cast into molds, sometimes with a traditional perforated ladle called a pelle a Ã . Brie the 20 (cm 8) in mold is filled with several thin layers of cheese and drained for approximately 18. hours
Brie is the best known French cheese and has a nickname The Queen of Cheeses. Brie is a soft cheese named after the French region Brie, where it was originally created.Several hundred years ago, Brie was one of the tributes which had to be paid to the French kings. In France, Brie is very different from the cheese exported to the United States.Real French Brie is unstabilized and the flavour is complex when the surface turns slightly brown. When the cheese is still pure-white, it is not matured.he cheese is then cast into molds, several layers of cheese are filled into mold and then kept for around 18 hours. After this the cheese is salted and aged for minimum four weeks. Brie cheese is slightly pale in colour with a greyish tinge under a rind.