Предмет: Химия, автор: fatmagul124

самый легкий металл в периодической системе Менделеева

Ответы

Автор ответа: DiankaStyles

Li литий самый легкий элемент , а самый тяжелый железо

Автор ответа: HUH39I

Самый тяжелый - осмий.

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Political system of the USA
The United States of America is a parliamentary republic. The people rule the country through the representatives they elect. Today any citizen who is at least 18 years old can vote. The Constitution of the USA was written in 1787. It is the basis for its laws.
The United States has a federalist system. There are fifty states in the USA. Each state has its own government and there is a federal or national government. Each state has its own constitution and can collect taxes. But only the national government can print money.
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