Предмет: Химия, автор: lipolina52

1. Найдите массу азота (н.у), объемом 4,48л.

Ответы

Автор ответа: Zluka228
0

Ответ:

Для нахождения массы азота использовать закон Авогадро:

1 моль газа при нормальных условиях (н.у) занимает объем 22,4 л.

Мы знаем, что объем азота равен 4,48 л.

Теперь найдем количество молей азота:

n = V / Vm,

где n - количество молей, V - объем, Vm - молярный объем.

Vm = 22,4 л/моль,

n = 4,48 л / 22,4 л/моль = 0,2 моль.

Теперь найдем массу азота:

Масса = количество молей * молярная масса.

Молярная масса азота (N2) равняется 28 г/моль.

Масса = 0,2 моль * 28 г/моль = 5,6 г.

Таким образом, масса азота при объеме 4,48 л (н.у) составляет 5,6 г.


lipolina52: а дано можно написать
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Вни¬ма¬тель¬но про¬чти¬те каж¬дое пред¬ло¬же¬ние и рас¬крой¬те скоб¬ки, по¬ста¬вив гла¬гол в Present Continuous или Present Simple.

1) His father (not to watch) TV at the moment. He (to sleep) because he is tired.
2) Pat (not to cook) dinner at the moment. She (to cook) dinner every Monday.
3) I (not to drink) coffee now. I (to write) an English exercise.
4) I (not to drink) coffee in the evening. I (to drink) coffee in the morning.
5) Your friend (to do) his homework now?
6) Your friend (to go) to school in the morning?
7) Look! The baby (to sleep).
8) The baby always (to sleep) after dinner.
9) My grandmother (not to work). She is on pension.
10) My father (not to sleep) now. He (to work) in the garden.

Вни¬ма¬тель¬но про¬чти¬те каж¬дое пред¬ло¬же¬ние и рас¬крой¬те скоб¬ки, по¬ста¬вив гла¬гол в Present Continuous или Present Simple.

1) His father (not to watch) TV at the moment. He (to sleep) because he is tired.
2) Pat (not to cook) dinner at the moment. She (to cook) dinner every Monday.
3) I (not to drink) coffee now. I (to write) an English exercise.
4) I (not to drink) coffee in the evening. I (to drink) coffee in the morning.
5) Your friend (to do) his homework now?
6) Your friend (to go) to school in the morning?
7) Look! The baby (to sleep).
8) The baby always (to sleep) after dinner.
9) My grandmother (not to work). She is on pension.
10) My father (not to sleep) now. He (to work) in the garden.