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Questions and Answers

What is the percentage of nitrogen in the air we breathe?

21%

78% (correct)

0.04%

Why does nitrogen exist in the form N2 in the atmosphere?

As a result of its high reactivity with other gases

It exists as a compound with oxygen

Because of its strong attraction to oxygen

Due to a triple covalent bond between two nitrogen atoms (correct)

Which of these gases is mentioned as a greenhouse gas in the text?

Nitrogen (N2)

Carbon monoxide (CO)

Methane (CH4) (correct)

Sulfur dioxide (SO2)

What is the main source of nitrogen in the atmosphere?

Certain combustion processes and decaying of animals and plants Signup and view all the answers

What is the percentage of oxygen in the air we breathe?

21% Signup and view all the answers

Какие газы упоминаются как парниковые газы в тексте?

Углекислый газ (CO2) и метан (CH4) Signup and view all the answers

Почему азот существует в форме N2 в атмосфере?

Из-за того, что каждый атом азота предпочитает отдать три электрона другим атомам Signup and view all the answers

Что такое смесь в химии по сравнению с соединением?

Соединение имеет свойства и состав, отличные от его составляющих элементов, в то время как смесь сохраняет химические свойства своих компонентов Signup and view all the answers