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За допомогою склянної трубки крізь розчини речовин пропускають вуглекислий газ - карбон (4) оксид. Зміни спостерігатимуть у розчині речовини, формула якої А NaBr ; Б NaNO3; В HNO3; Г Ca(OH)2
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ответ г: CO2+Ca(OH)2=CaCO3+H2O
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Автор:
magdalena39 - 6 лет назад
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Read the text about the World Youth Games in Moscow. On 11 through 19 July, 1998 the World Youth Games were held in Moscow, the capital of Russia. They were attended by more than 7,000 young athletes of between 11 and 18 from over 140 countries of the world. The motto of the Games was “Moscow, the Wide World of Youth” and the emblem was of a boy and a girl holding hands and running together. The mascot of the games was a bear cub (медвежонок) Mishutka, who was a relative of the Olympic Bear of 1980 Summer Games in Moscow. The programme of the Games consisted of sports events and cultural programme. The sports programme included fifteen most popular sports: soccer, volleyball, basketball, swimming, tennis, light athletics and others. They are included into the sports and physical culture programmes of many countries. The Games also provided cultural events: for example an international discussion “If I were the President of the International Olympic Committee”, a project “Marathon Into the 21st Century. Sports Against AIDS and Drugs”. The cultural programme was interesting for both the sportsmen and the guests of the Games. They were shown the national culture and traditions of Russia: national sports, games, songs and dances, as well as displays of drawings and posters by young Russians. In the International Club there were also meetings with Olympic champions of various nations and Days of National Cultures. Girls and boys I of different countries, races and religions of the planet could meet and rest in the International Club. The cultural programme included trips to the best historic and cultural centres of Moscow, theatre performances and visits to museums-
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