Abstract In this experiment, 1.41M sodium chloride aqueous solution was prepared and quantitatively transferred into a 250ml volumetric flask to further diluted to 0.141M. The transfer was inspected to be complete by attempting to precipitate with silver nitrate solution. Sand was successfully separated from 600ml water by vacuum filtration. The Pasteur pipet was calibrated to…
There is currently much debate on the desirability of landfilling particular wastes, the practicability of alternatives such as waste minimisation or pre-treatment, the extent of waste pre-treatment required, and of the most appropriate landfilling strategies for the final residues. This debate is likely to stimulate significant developments in landfilling methods during the next decade. Current…
Genetic variation is the raw material for the plant breeder, who must often select from primitive and wild plants, including wild species, in search of new genes. The appearance of new diseases, new pests, or new virulent forms of disease causing organisms makes it imperative that the plant be preserved, because it offers a potential…
Alger Hiss Alger Hiss was born in 1904 in Baltimore, Maryland. Hiss was an active spy for the communists in the U.S.A. Alger Hiss denied the charges that he was a communist and he was asked to take a lie detector test. The man who wanted to have Hiss take the test was Whittaker Chambers.…
Coliseum; amphitheatre Invented architecture primarily for these combats Amphi- going all the way around; the theatre in the round Coliseum- colossal Performance space with people sitting all around is a Roman invention Arena= sand (that’s what you needed to soak up the blood) 45m x 20m (performance space) 200x 150m 9 storeys tall Equipped with…