Предмет: Химия, автор: alexey07294129

результат реакции между хлоридом бария и сульфатом натрия ​

Ответы

Автор ответа: nechitaytemoynic
0

Ответ:

Объяснение:

произойдёт реакция обмена.

BaCl2 + Na2SO4 = 2NaCl + BaSO4.

выпадает осадок BaSO4

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: uperpavv
UNIT I

Part 1

 

Grammar
revision: to be (Present)


 

Task 1. Complete the sentences
with am / am not, is / is not, are / are
not.


1.        
He ……… a mechanical engineer.

2.        
No, I ……… a web designer, I
……… an electronic engineer.

3.        
The technologist ……… in his
office.

4.        
These files ………
out-of-date.

5.        
John ……… quite competent.

6.        
No, they ……… electricians.

7.        
My friends and I ………
students of the engineering faculty.

8.        
No, it ……… a two-stroke
engine, it ……… a four-stroke engine.

9.        
Those screwdrivers ……… new.

10.    
Where ......... these tools
from?

 


Task 2. Write full sentences,
use am / is / are each time.

(A URL the address of
a file on the Internet) → A URL is
the address of a file on the Internet.(Just a few solar
panels efficient)(Not all Internet
users competent enough)(Some printers not very
quick)(A racing car a very
complex system)(The total number of
pixels on the display its resolution)(Some of the people in
this workshop not at work now)(These programs
available from our website)(I interested in computer-aided
design) (Those Internet service providers not
reliable)

 

Task 3. Write true sentences,
positive or negative. Use am / am not, is
/ is not, are / are not.

(Paris
/ the capital of France)
                       - Paris is
the capital of France.(We / students of the law
faculty)     - We are not students of the law
faculty.(Few application
programs / free of charge)(The question of personal
data security / important at present)(We / competent
computer users)(Most teenagers /
interested in social networks)(It / easy to study power
engineering)(I / nervous at exams)(Passwords / often
used to protect confidential information)(Modems / necessary to
have Internet access)

 

Task 4. Ask and answer
questions using the words given in brackets.

(elderly people eager
to use PCs)?(virtual reality
useful in education)?(German cars popular
in Russia)?(it easy to design a
new engine)?(civil engineering
complicated)?(all mobile phone services
free)?(iPhones widespread in
many European countries)?(you a student of
Kolomna Branch of Moscow State Open University)?(Otto Diesel the inventor
of the dynamo)?(nuclear power
stations dangerous)?

 

Task 5. Write questions with What / Who / Where / When / How / Why, use am / is / are.

The providers are
ready to install the equipment. (What?)The chief engineer is
in the office. (Where?)This e-mail attachment
is suspicious. (Why?)The colour of my motorbike
is dark. (What colour?)These tools are rather
valuable. (How much?)Elderly people are not
always eager to send sms-messages. (What kind of?)Mr. Blake is a mechanic.
(Who?)The help of a
competent technologist is necessary in most difficult cases. (When?)Three of the nuts are the
wrong size. (How many?)The engineer’s
interests are in the area of applied science and research. (Whose?)The head of our
department is 42 years old. (How old?)

 

Task 6. Complete the following
tag questions.

The Internet providers
are responsible for the service quality, .........?This program isn’t
free, ………?These students aren’t
from Moscow, ………?You are a future
engineer, ………?The weather isn’t
pleasant, .........?Those files aren’t in
the folder, ………?Miss Bennet is a
competent technologist, ………?These specialists are
foreigners, ………?You aren’t interested
in machine building, ………?This student is never
late, .........?
1 год назад
Предмет: Русский язык, автор: elenateryushov

звукобуквенный анализ слова ПИСЬМО
1 год назад
Предмет: Русский язык, автор: 8238530
Топор это словарное слово?
1 год назад
Предмет: Математика, автор: 23Илья32
НОК(9;14)= НОК(36;48)= НОК(210;350)= НОК(12;15;18)=
8 лет назад
Предмет: Математика, автор: Lesya2204
саша начертил в тетради 5 отрезков, причем каждый следующий отрезок он чертил короче на 3 см, и последний отрезок оказался длиной в 2 см. Какой длины был первый отрезок у Саши.
8 лет назад