Методом электронного баланса расставьте коэффициенты в следующих схемах реакций:

Fе+ НNО3    →Fе( NО3)2 + Ν2 + Н2 О 

Визначте площу фігури, яка обмежена лініями y=2^x, y=3-x, x=0

вычислите объем углекислого газа (при н.у.), который образуется при взаимодействии 350г 25%-ого раствора соляной кислоты с 30г известняка (CaCО3)

Пятачок чистит картошку.После очистки вес картошки уменьшается на 1\5.Сколько картошки надо купить Пяточку,чтобы получить 8 кг очищенной картошки?

Помогите забыла написать , перевод есть надо : Выпишите из текста три предложения с Participle II и подчеркните Participle II. The United Kingdom of Great Britain and Northern Ireland is situated on the British Isles. The British Isles consist of two large islands. Great Britain and Ireland , and about five thousands small islands. Their total area is over 244 000 square kilometre. The United Kihgdom is one of the world's smaller countries. Its population is over 57 million. About 80 percent of the population is urban. The United Kihgdom is made up of four countries : England , Wales , Scotland and Northern Ireland. Their capitals are London , Cardiff, Edinburg and Belfast respectively. Great Britain consists England , Scotland and Wales and does not include Northern Ireland. But in everyday speech Great Britain is used in the meaning of the United Kingdom of Great Britain and Northern Ireland. The capital of the UK is London. The British Isles are separated from the Continent by the North Sea and the British Channel. The western coast of Great Britain is washed by the Atlantic Ocean and the Irish Sea. The surface of the British Isles varies very much. The North of Scotland is mountainous and is called the Highlands. The South , which has beautiful valleys and plains , is called the Lowlands. The north and west of England are mountainous , but the eastern , central and south-eastern parts of England are a vast plain , Mountains are not very high. Ben Nevis in Scotland is the highest mountainous ( 1343 m ). There are a lot of rivers in Great Britain , but they are not very long. The Seven is the longest river , while the Thames is the deepest and the most important one.