Предмет: Химия, автор: sky6662

вычислите количество вещества метана CH4 содержащего 30 * 10²³ молекул

Ответы

Автор ответа: mrvladimir2
6

Ответ: 5 моль

Дано:

N(CH₄) = 30*10²³ молекул

Найти:

n(CH₄) - ?

Объяснение:

N_{A}=6*10^{23} mol^{-1}\\n(CH_{4}) = \frac{N}{N_{A}}

n(CH₄) = 30*10²³/6*10²³ = 5 моль

Похожие вопросы
Предмет: Английский язык, автор: Аноним
1. ____C____ did you buy that skirt? Last week. 6. __________________are you late? I overslept.

A) Who B) Where C) When A) Why B) Who C) How

2. ____________________is the black car? John’s. 7. ____________________is John? He’s upstairs.

A) Who B) Whose C) Which A) Who B) Where C) What

3. ___________ do you travel abroad? Every year. 8. ___________________is the Philips TV? $150.

A) How many B) How C) How often A) How B) How many C) How much

4. _______________________is your name? Ted. 9. ___________have you been here? Two weeks.

A) Where B) Why C) What A) How long B) How much c) How many

5. __________________________ are you? Nine. 10. _______________is your car? The white one.

A) How old B) How long C) How much A) Which B) When C) Whose

Ex. 151. Complete the reporter’s interview with Susan Star’s secretary.



R: 1) What time does Susan wake up?

S: Susan wakes up at 9 o’clock.

R: 2) ______________________________

S: She has breakfast in bed.

R: 3) ______________________________

S: She starts work at 11 o’clock.

R: 4) ______________________________

S: No, she goes to work by taxi.

R: 5) ______________________________

S: Yes, she works in Hollywood.

R: 6) ______________________________

S: Yes, she usually goes to bed late.

R: 7) ______________________________

S: She lives with her mother.

R: 8) ______________________________

S: No, she isn’t married.

R: 9) ______________________________

S: Two sisters and one brother.

R: 10) ______________________________

S: Their names are Helen, Mary and John.
Предмет: Алгебра, автор: katrin260
Предмет: Математика, автор: Аноним