Предмет: Химия, автор: MoRoJeNo

1.Определите валентность первого элемента в формулах следующих соединений одновалентного хлора(KCl?MgCl2,FeCl4,PCl5.

Ответы

Автор ответа: mchem

валентности первых элементов таковы:

KCl - I

MgCl2 - II

FeCl4 - IV

PCl5 - V

Автор ответа: AnnKalevich

KCl - валентность калия I

MgCl2 - валентность магния II

FeCl4 - валентность елеза IV

PCl5- валентность фосфора V

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Text B. American Economy
The United States has a mixed economy because privately owned businesses and government both play important roles. Indeed, some of the most enduring debates of American economic history focus on the relative roles of the public and private sectors.

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