Everyone is very familiar with water. We observe it as rain and snow and can see it in the oceans, lakes, rivers, and streams. Although the water in our bodies is not as apparent, recognize that most of our weight is made up of water. In fact, the normal adult is made up of approximately 60% water. Thus, water is essential for life.
Water is made up of hydrogen ions (H+) linked to hydroxyl ions (OH-) to form H2O. The molecular formula for water is H2O. From this formula and the atomic weights for hydrogen and oxygen you can calculate that the molecular weight of water is approximately 18 grams.
Что особенного в его истории? Заполните пропуски, используя простое время простое время активных или пассивных форм глаголов в скобках Собор (1) (сборка) в 19 веке. Обычные (простые) люди(2) (собирать) деньги для него. Собор был посвящен (посвящён) в победу русских над армией Наполеона в Отечественной войне 1812 года. Собор (3) (начинать) в 1839 году по проекту русского архитектора к. А. тона. Многие известные живописцы (4) (украсить) его. Строительные работы (строительство) (5) (готово) в 1883 году. В 1930-е годы собор (6) (уничтожить) большевиками. Они хотели построить Дворец Советов (Дворец Советов) в месте великолепного собора. Великой Отечественной войны (Великая Отечественная война) (7) (уничтожить) свои планы. После войны бассейн (8) (сборка) есть. Но собор был еще в сердцах (сердцах) многих россиян. 7 января 1995 года нового кафедрального собора Христа начинать). В пять лет копия(10) (сборка
Moscow is an old city. Yury Dolgoruki founded it in 1147. In the early 12th century, Prince Yury was Prince of Vladimir and Suzdal, and Prince of Kiev at the same time. Those days, Kiev was the capital of the country called Kievan Rus. Kiev was in the south and Vladimir was in the north, so it was difficult to live and rule in both towns at the same time. Yury lived and ruled in Kiev and his son Andrey in Vladimir. Many years passed. Prince Yury was an old man and he decided to visit his son. He and his men set off to Vladimir. Their journey was long and difficult. One day, when they were in a dark forest, Prince Yury suddenly saw a large white cloud. The cloud slowly turned into a huge animal with three heads. Then, it disappeared. “It’s a sign!” said Prince Yury’s adviser. This is the place for a great city. Everyone laughed at him. A few hours later they reached a small village on the bank of the Moskva River. The ruler of the place was boyarin Stepan Kuchko. He did not open the gates and a fight began. Prince Yuri and his men won the battle. It was then that the Prince said, “This is a place for a new town. I will build it here and call it Moskva”. Today Moscow is the capital of Russia and one of the most famous cities in the world.
Everyone is very familiar with water. We observe it as rain and snow and can see it in the oceans, lakes, rivers, and streams. Although the water in our bodies is not as apparent, recognize that most of our weight is made up of water. In fact, the normal adult is made up of approximately 60% water. Thus, water is essential for life.
Water is made up of hydrogen ions (H+) linked to hydroxyl ions (OH-) to form H2O. The molecular formula for water is H2O. From this formula and the atomic weights for hydrogen and oxygen you can calculate that the molecular weight of water is approximately 18 grams.