Предмет: Химия, автор: afdamama

Вычислить массовые доли элементов в процентах и массовые отношения элементов.
Формула P2O5.
Умоляю помогите даю 80 баллов.

Ответы

Автор ответа: asyatyan06

1

вот держи ...надеюсь это тебе поможет!

Приложения:

afdamama: Ха

afdamama: Тоже

afdamama: Надо на внеурочку сходить

asyatyan06: ну если что спрашивай

afdamama: Подучить

afdamama: Хорошо

asyatyan06: правильно

afdamama: Спасибо еще раз за помощь

afdamama: Пока

asyatyan06: пока

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Математика, автор: spashenko09

Побудуйте трикутник ABC якщо A(-2;-3); B(-1;4) C(-2;3)

6 лет назад

Предмет: Английский язык, автор: elevas1997

ДАЮ 100 БАЛЛОВ!1. Put the verb in brackets into the correct tense. If I ... (take) your advice, I wouldn`t have failed.
had taken
take
took
has taken
2. Put the verb in brackets into the correct tense. I wish he ... (not/ be) late last night.
hasn`t been
not been
isn`t been
hadn`t been
3. Put the verb in brackets into the correct tense. I wish he ..... (not/ lie) to hisparents. They are very upset.
wouldn't lie
lies
hadn't lied
will not lie
4. Put the verb in brackets into the correct tense. If he hadn`t parked his car there, he ... (not/ get) a fine.
have got
would got
isn`t getting
wouldn`t have got
5. Put the verb in brackets into the correct tense. If only I ..... (not/ miss) the bus. I got to school late.
wouldn't miss
hadn't missed
not missed
haven't missed
6. Choose the correct word. They haven`t finished building the new school ... .
yet
already
7. Choose the correct word. Comic Relief has raised over 600 million ... it started in the 1980s.
for
since
8. Choose the correct word. We've ..... cleaned the graffiti off the walls.
since
already
9. Choose the correct word. Peter had gone ... we arrived.
ago
before
10. Choose the correct word. My older sister Ann has ..... filled out her application form. She sent it by post today.
yet
already
11. Choose the correct word. Organising a concert is a good way for a charity to ... money.
swept
save
raise
lay
12. Choose the correct word. We can all help to fight ... and hunger.
illiteracy
poverty
war
birds
13. Choose the correct word. Deforestation has destroyed the gorillas` ... .
legend
forecast
habitat
police
14. Choose the correct word. The tsunami ..... many houses out to sea.
raise
affect
swept
lay
15. Choose the correct word. The area ... from hurricanes and floods every year.
suffers
runs
erupts
attracts
16. Choose the correct word. Rescue teams worked through the night to ..... the earthquake victims.
suffer
swept
save
raise
17. Choose the correct word. The river is so ... that you can`t swim in it.
polluted
crowded
interesting
deep
18. Choose the correct word. Police caught two poachers ..... in the forest.
lay
habitat
raise
hunting
19. Choose the correct word. We watched the turtles ..... their eggs in the sand.
affect
lay
poverty
polluted
20. Choose the correct word. Heavy floods in the area ..... people's lives every year.
save
lay
polluted
affect
21. Put the verb in brackets into the correct form. It ... (start) to rain while we were at the beach.
starting
started
has
have started
22. Put the verb in brackets into the correct form. When ... (he/ decide) to join the club?
did he deciding
were he decide
he decided
did he decide
23. Put the verb in brackets into the correct form. Bob looked tired. He ... (spend) the whole morning working in the hospital.
has spent
spent
have spent
had spent
24. Put the verb in brackets into the correct form. They ... (work) as volunteers since 2009.
have worked
are worked
is working
worked
25. Put the verb in brackets into the correct form. They ... (already/ book) the tickets before they went to the cinema.
had already booked
already had booked
already have booked
already booked

6 лет назад

Предмет: Математика, автор: robloksm789

пж помогите пожалуйста

6 лет назад

Предмет: Математика, автор: амирокс4

в январе фабрика выпустила 4850 Т бумаги в феврале на 365 тонн меньше из этой бумаге 6335 там пошло на изготовление общих тетрадей остальные бумаги сделать тонкие тетради Поставь вопрос и реши задачу

9 лет назад

Предмет: Литература, автор: bezzubenkova02

Роль графа Миниха в произведении А.С. Пушкина "Капитанская дочка"

9 лет назад