В чём причина широкого применения калиброванных заготовок? 2. Зачем выполняют сращивание заготовок по длине? 3. Для каких целей выполняют сплачивание заготовок по ширине?
А) бензол проявляет основные свойства, например, реагируя с кислотами (реакции приложены в фото) б) уксусная проявляет кислотные свойства, например, реагируя с металлами или щелочами (реакции приложены в фото (там, где кислота взаимодействует с металлом, замените HCOOH на CH3COOH и (HCOO)2Mg на (CH3COO)2Mg, а там, где кислота взаимодействует с щелочью, замените CH3CH2COOH на CH3COOH и CH3CH2COOK на CH3COOK)) Полное ионное уравнение:2CH3COO(-) + 2H(+) + Mg(0)->2CH3COO(-) + Mg(2+) + H2 Краткое ионное уравнение:2H(+) + Mg(0)->Mg(2+) + H2
Dear Alex,
My name is Ann. I am from Russia. It is a large country. There are many cities, towns and farms in Russia. The capital of Russia is Moscow. I live in Novosibirsk. It’s a big city. The streets are wide and long in Novosibirsk.
In the streets you can see a lot of people, cars, big and tall houses.
Our country is beautiful! Come and see us!
Best wishes,
Ann Serova
Dear Alex,
My name is Ann. I am from Russia. It is a large country. There are many cities, towns and farms in Russia. The capital of Russia is Moscow. It’s a big city. The streets are wide and long in Moscow. In the streets you can see a lot of people, cars, big and tall houses.
I live in the country. In the country you can see green fields and hills, long rivers and nice green gardens with apple trees. There are a lot of cows, horses and sheep on the farms. The houses in the country are nice and small.
Our country is beautiful! Come and see us!
Best wishes,
Ann Serova
б) уксусная проявляет кислотные свойства, например, реагируя с металлами или щелочами (реакции приложены в фото (там, где кислота взаимодействует с металлом, замените HCOOH на CH3COOH и (HCOO)2Mg на (CH3COO)2Mg, а там, где кислота взаимодействует с щелочью, замените CH3CH2COOH на CH3COOH и CH3CH2COOK на CH3COOK))
Полное ионное уравнение:2CH3COO(-) + 2H(+) + Mg(0)->2CH3COO(-) + Mg(2+) + H2
Краткое ионное уравнение:2H(+) + Mg(0)->Mg(2+) + H2
My name is Ann. I am from Russia. It is a large country. There are many cities, towns and farms in Russia. The capital of Russia is Moscow. I live in Novosibirsk. It’s a big city. The streets are wide and long in Novosibirsk.
In the streets you can see a lot of people, cars, big and tall houses.
Our country is beautiful! Come and see us!
Best wishes,
Ann Serova
Dear Alex,
My name is Ann. I am from Russia. It is a large country. There are many cities, towns and farms in Russia. The capital of Russia is Moscow. It’s a big city. The streets are wide and long in Moscow. In the streets you can see a lot of people, cars, big and tall houses.
I live in the country. In the country you can see green fields and hills, long rivers and nice green gardens with apple trees. There are a lot of cows, horses and sheep on the farms. The houses in the country are nice and small.
Our country is beautiful! Come and see us!
Best wishes,
Ann Serova