Предмет: Химия, автор: ssssssssssarra

ДАЮ 30 БАЛЛОВ, СРОЧНО
Найди общее число атомов в смеси, состоящей из 30 молекул криптона, 7 молекул озона и 6 молекул кислорода.

Ответы

Автор ответа: Himulia
1

Ответ:

63

Объяснение:

Криптон - одноатомная молекула

Озон - трехатомная О₃

кислород - двухатомная О₂

30+7×3+6×2=63

chemistryMagistr: Здравствуйте. Помогите пожалуйста. Буду очень благодарен. https://znanija.com/task/40464971
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Қазақ тiлi, автор: елитед
Составьте предложения со словами пенал карандаш и сумка на казахском
1 год назад
Предмет: Английский язык, автор: nahervas
1What women _______________, sends a message about them and their expectations.

1 dress
2 wears
3 dresses
4 wear

2 Don’t blame the previous government _________________ present troubles.

for
in
of
at

3If you want to turn a discussion in your favor, forget what ___________________ is telling you and try to find out what lies behind the

anyone
something
no one
someone
argument.

4 Workers who leave Britain ______________ a job overseas can get a 43 per sent pay rise, a report says.

for
in
at
on

5 There has been a decline in the number of dolphins since the 1940s in London , _________________ they can often be seen on the Thames, especially in April and May.

in spite of
moreover
instead of
besides

6 More and more people are for going holidays abroad in favor _______________ British destinations, as the credit crisis worsens.

in
of
on
for

7 Footballers and singers are negative icons if they don’t do _________________ that teachers morality and stability in life.

anything
nothing
everything
something

8 It has been proved that planets ________________ influence human characters.

may
should
need
shall

9 Born in 1969, Mathew McConaughey _______________ in Texas, where his father owned a petrol station.

has grown up
had grown up
grew up
has been grown up

10 In India, the history of wine can be traced to the culture’s _________________ religious writing.

eldest
older
elder
oldest

11 Under a new points-based system for immigrants, non – EU citizens will be unable __________________ a job in Britain.

to get
not to get
not getting
getting

12 In April 1978, a crowd of people who _________________ from all over the country gathered in Victoria Park in London’s East End to attend ‘Rock against Racism’ concert.

had come
came
have come
has come

13 The music business is ______________ by a particular style and sound than ever.

less
less defined
least defined
the least defined

14 The first person to receive a star on the Walk of Fame in Hollywood ________ actress Joanne Woodward.

had been
has been
is
was

15 A research shows that many men believe that the world __________________ by women now.

is dominated
dominate
was dominated
dominates

16 The police _________________ to crack down people driving on drugs.

are trying
is trying
will trying
was trying

17 The way a person speaks is important, because it immediately lets others _________________ his level of education and intelligence.

assessing
to have assessed
to assess
assess

18 Don’t let doubts about your future _______________ you hedge your bets.

will make
make
to make
making

19 Eurostar trains have set _______________ record-traveling from Brussels to London for one hour 43 minutes.

the other
other
others
another

20 Do you wish you _______________ a better job?

will have
have
are having
had

21 When a couple with kids decide to divorce, the future welfare of children ________________ be their priority.

should
may
must
can
1 год назад
Предмет: Другие предметы, автор: danilafox2003
мастер промысла 8 букв 1-ая буква-х
1 год назад
Предмет: Математика, автор: ира1005
Порядок действий 10-(9-4)+7
8 лет назад
Предмет: Обществознание, автор: кейт737
почему комфортный для человека режим сна и бодроствания учёные называют хронотипим?

Помогите пожалуйста срочно нужно!!!
8 лет назад