They may cover all or part of the body and are usually very itchy. 1  Hives usually break out first on the covered areas of the skin such as the trunk and upper parts of the arms and legs.  Wheals appear in batches. Each wheal may last from a few minutes to six hours.
Early years [edit]. Arrhenius was born on February 19, 1859, at Vik (also spelled Wik or Wijk), near Uppsala, Sweden, the son of Svante Gustav and Carolina Thunberg Arrhenius.oday, Arrhenius is best known for his study published in 1896, on the greenhouse effect.
The Arrhenius equation provides a relationship between the rate constant k and temperature T. The Arrhenius equation is: k=zpe^(-(Ea)/(RT)) where, k is the rate constant, z is the collision factor, p is the steric factor, Ea is the activation energy, R=8.3245J/(mol.K) is the ideal gas constant and T is the temperature. The Arrhenius equation could also be written as: k=Ae^(-(Ea)/(RT)), where, A=zp is the Arrhenius factor.