Предмет: Физика, автор: clever11112

помогите пожалуйста чему равна объем азота​

Приложения:

Ответы

Автор ответа: tatuin57
1

M₁=2г/моль

ρ₁=0,1кг/м³

M₂=28г/моль

ρ₂=1,2кг/м³

V₁=6,8м³

V₂-?

количество вещества

ν=m/M

масса

m=ρV

по условию

ν₁=ν₂

подставим

ρ₁V₁/M₁=ρ₂V₂/M₂

найдём

V₂=p₁V₁M₂/M₁ρ₂

вычислим

V₂=0.1*6.8*28/(2*1.2)=7.93м³

ответ отмечен правильно

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: Аноним
What are the answers to the questions?

1- A: Did you like the new program on TV yesterday?
B: Yes, I ........ it very much.

A) Liked
B) like
C) am like
D) was like
E) likes


2- ............. I arrived home, my family ............. me a surprise party.
A) When/give
B) While/give
C) When/gave
D) While/gave
E) When/gives


3- .................... I was walking in the street, I came across an old classmate.

A) While
B) When
C) Which
D) Whose
E) Where


4- A: Have you ......... England before?
B: Yes, I ................. there two years ago.

A) been/go
B) went/went
C) been to/go
D) gone to/went
E) been to/went


5- After I had breakfast, I ............... some cofee to feel more energetic.

A) drink
B) am drinking
C) drank
D) was drinking
E) drinks


6- ............ I went out, I wore my jacket and then ............... the door.

A) before/lock
B) before/locked
C) after/lock
D) after/locking
E) before/locks


7- A: Mum, did you see my book?
B: Yes, I ...................... it on the table in the living room two hours ago.

A) see
B) was
C) saw
D) didn't
E) did


8- A: My computer broke down and I need to finish my term paper.
B: Would you mind if I ...............yours?

A) borrowed
B) borrow
C) am borrowing
D) was borrowing
E) borrows

9- The dinner is ready. We can ..................now.

A) do the ironing
B) do the laundry
C) set the table
D) make the breakfast
E) do the chores


10- A: Sorry, I think I ................... Could you please help me to find this address?

A) got lost
B) got ready
C) got together
D) got started
E) got divorced


11- A: Welcome, how............. I help you?
B: It's ............. tomorrow and I want to buy some flowers for my lover.

A) did/New Year's Eve
B) am/Mother's Day
C) do/Earth Day
D) may/Hıdırellez
E) may/Valetine's Day

12- Jack: Tom, what ........... you ............ at 9 am yesterday?
Tom: I guess I was having breakfast.

A) were/doing
B) are/did
C) are/doing
D) were/did


13- A: Welcome to the Star Hotel. How many I help you?
B: Hi. I Want to book a ............. for two days.

A) swimming pool
B) reception
C) sea view
D) double room
E) car park

14- A: Mum, I can't find my favourite T-shirt. ...................... you please help me?
B: Ok.

A) Would you mind
B) May
C) Should
D) Are
E) Will


15- My cat ............. the vase in the living room yesterday.
A) break
B) broke
C) was breaking
D) is breaking
E) breaks


16- ..................... I go to bed, I like .................... a glass of milk.

A) before/drink
B) after/drink
C) before/drank
D) after/drank
E) before/drinking

17- I am so cold. Would you mind ............... of the air conditioner?

A) turns
B) was turning
C) turned
D) turning
E) turn

18- When ı was a little child, I ...................... draw nice pictures.

A) can
B) may
C) should
D) could
E) must


19- After the journey we felt very tired and then we went back to our hotels to ..............

A) have a rest
B) make a suggestion
C) take a look
D) make arrangements
E) take a chance

20- A: Did you pay the bill, John?
B: Sorry, darling. I ................ pay it tomorrow.

A) was
B) will
C) could
D) did
E) am

21- ..................... you visit Russia, you will see that there are many tourist ............
A) when/check in
B) when/attractions
C) while/brochures
D) while/passangers
E) when/luggage


22- You ............. at home yesterday when I called you. Where ......... you go?

A) weren't/can
B) were/will
C) weren't/are
D) were/do
E) weren't/did
5 лет назад
Предмет: Русский язык, автор: SkwidDDDi
Просклонять трёхзначное числительное, придумать предложение с числительным, подчеркнуть числительное, сделать р-р №3 (разбор номер 3)
5 лет назад
Предмет: Биология, автор: melnikkamila
Загальна характеристика картоплі
5 лет назад
Предмет: Математика, автор: ДАДАДАДАДАДАДДАДАДА
Выберите одно из заданий и выполните.При выборе задания учитывайте свои возможности.
8 лет назад
Предмет: Алгебра, автор: Malhooligan228
10-7x=3-2(5x+1) уравнение
8 лет назад