-
Расставьте коэффициенты в следующих схемах реакций:
г) Na2O2+Na-> Na2O
д) NO+O2-> NO2
е) N2O3+O2-> N2O4
ПОМОГИТЕ ПОЖАЛУЙСТА ПРОШУ СРОЧНО!
Ответы 6
-
смотря что
-
Автор:
jadyn - 6 лет назад
-
0
-
-
Начертите схему цепи, содержащей один гальванический элемент и два звонка, каждый из которых можно включать отдельно.
-
Автор:
douglasvhqk - 6 лет назад
-
0
-
-
извините я не знаю этого)
-
Автор:
annalewis - 6 лет назад
-
0
-
-
а у кого можно спросить
-
Автор:
scarlettriley - 6 лет назад
-
0
-
-
понятия не имею: (
-
Автор:
montanakline - 6 лет назад
-
0
-
-
1) Na2O2 + 2N.a. = 2Na2Oвроде правильно)2)2N0+O2 = 2NOt3)2N2O3 + O2 = 2N2O4
-
Автор:
sparkyv2vy - 6 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
Помогите! Заполнить пропуски корректно времени
III. FILL IN THE CORRECT TENSE
1.I`m sure he _______(to agree) to show us how to use the Internet.
2.They _____(to open) the new computer library next week.
3.This time tomorrow I_____(to sit) my exams.
4.“I think I _____(to do) a design course at University,” Bill said.
5.The rock concert _____(to start) at 9.00.
6.I`m sure he _____(to buy) a new car by the time he graduates.
7.They _____(to be) married for thirty years this January.
8.I`ve bought some wood, I _____(to make) a new cupboard.
9.I can`t come with you this afternoon because I _____(to see) my aunt.
10. I _____(to sit) here for 20 minutes.
11. Tom _____(to work) since 10 o`clock.
12.Mary is tired because she _____(to work) in the garden.
13.How long they _____(to know) each other?
14.Sara looks upset. She _____(to cry).
15.I just _____(to finish) my work in the library.-
Предмет:
Английский язык -
Автор:
contreras - 6 лет назад
-
Ответов:
1 -
Смотреть
-
-
Найдите значение выражения 1) 9в3 степени 2) 12в2 степени 3) 2в4 степени 4) 1в100 степени 5) 4в3 степени 6) 10в3 степени
-
Предмет:
Математика -
Автор:
hammerqvym - 6 лет назад
-
Ответов:
4 -
Смотреть
-
-
Упражнения «Simple Tenses» - Present Simple
I. Преобразуйте следующие предложения в вопросительные и отри¬ цательные:
1. Не knows the answer to this question. 2. He leaves home at eight o'clock. 3. The last train arrives at midnight. 4. It is important to choose a good job. 5. They refuse to help us. 6. This job suits his abilities well enough.
II. Употребите глагол в третьем лице единственного числа, пользуясь образцом: I think I 'm right. - Не thinks he is right.
1. I always keep my problems to myself. 2. What do they do for a living? They work in an office. 3. I don't think I'm right. 4. We always examine facts carefully. 5. They refuse to do what is called low work. 6. Teachers are well aware that their work is necessary to society. 7. You often speak too fast. 8. Don't you see that your work is very important to us?
III. Раскройте скобки, употребив глаголы в the Simple Present Tense:
1. I generally (to get up) at 8 o'clock. 2. Our lecturer (to speak) very good English. 3. He (to be) always in a hurry. 4. In Britain today, all children (to start) their education at the age of five. 5. She (to plan) to go to Britain next month. 6. Uranus (to revolve) around the Sun once in 84 years. 7. Students' delegation (to arrive) tomorrow. 8. The Prime Minister of Britain always (to live) in 10 Downing Street. I always get up at 7 a.m.. I do not always get up at 7 a.m.. Do you always get up at 7 a.m.? She usually quarrels on trifles. She does not usually quarrel on trifles. Does she usually quarrel on trifles?9. Children whose parents (to read) a great deal usually (to become) good readers themselves. 10.Some readers (to avoid) books on the best-seller list
-
Предмет:
Английский язык -
Автор:
dwaynesnow - 6 лет назад
-
Ответов:
1 -
Смотреть
-
-
Решите уравнения х^2-2х=15
-
Предмет:
Математика -
Автор:
madeleine4pv4 - 6 лет назад
-
Ответов:
1 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35934 -
Devilian
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
770
How much to ban the user?
1 hour
1 day
100 years