1. The 100 metres world record is a. 9.58 seconds b. 9.38 seconds c. 9.88 seconds 2. On most outdoor athletics tracks, one lap is … a. 200 metres b. 400 metres c. 800 metres 3. Athletic events which involve jumping and throwing are called a. field events b. track events c. aquatic events 4. The event which consists of fen track and field events is called the a. decathlon b, heptathlon c. pentathlon 5. The 2004 Olympic Games were held in a. Beijing b. Seoul c. Athens 6. The object that is passed from runner fo runner in a relay race is called a a. stick b. baton c. Tube

1.a но в по правде мировой рекорд в 100 метрах 9.69

2.b

3.a

4.a

5.c

6.b

Dmitry Ivanovich Mendeleev is a famous Russian chemist. He is best known for his development of the properties of the chemical elements of the periodic table. This table shows that property elements change periodically when they are ordered atomic weight. Mendeleev was born in 1834 in Tobolsk, Siberia. He studied chemistry at the University of St. Petersburg and in 1859 he was sent to study at the University of Heidelberg. Mendeleev returns to St. Petersburg and became a professor of chemistry at a technical institute in 1863. He became a professor of general chemistry at the University of St. Petersburg in 1866. Mendeleev was a well-known teacher, and, because there was not a good textbook on chemistry at that time, He wrote in two volumes "Principles of Chemistry", which became a classic Textbook on Chemistry. In this book, Mendeleev tried to classify elements according to their chemical properties. In 1869, he published his first version of his periodic table of elements. In 1871, he published an improved version of the periodic table in which He left spaces for elements that were not known at that time. His table and theories were later confirmed when three predicted elements: gallium, germanium, and scandium were discovered. Mendeleev investigated chemical solution theories. He found that the best proportions of alcohol and water in vodka are 40%. He also investigated the thermal expansion of liquids and the nature of oil. In 1893, he became director of the Bureau of Weights and Measures in St. Petersburg and held this post until his death in 1907.

Dmitri Ivanovich Mendeleev is a famous Russian chemist. He is best known for his development of the properties of the chemical elements of the periodic table. This table shows that property elements change periodically when they are ordered by atomic weight. Mendeleev was born in 1834 in Tobolsk, Siberia. He studied chemistry at the University of Saint Petersburg and in 1859 he was sent to study at the University of Heidelberg. Mendeleev returned to St. Petersburg and became a Professor of Chemistry at the technical Institute in 1863. He became a Professor of General Chemistry at the University of Saint Petersburg in 1866. Mendeleev was a well-known teacher, and because there was not a good chemistry textbook at the time, he wrote in two volumes" principles of chemistry" which became a classic chemistry Textbook. In this book, Mendeleev tried to classify elements according to their chemical properties. In 1869, he published his first version of his periodic table of elements. In 1871, he published an improved version of the periodic table, in which he left spaces for elements that were not known at the time. His table and theories were later confirmed when three predicted elements: gallium, germanium, and scandium were discovered. Mendeleev investigated the chemical theory of solutions. He found that the Best proportions of alcohol and water in vodka are 40%. He also investigated the thermal expansion of liquids and the nature of oil. In 1893, he became Director of the Bureau of weights and measures in St. Petersburg. Petersburg and held this post until his death in 1907.

Объяснение:

надеюсь