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    What is the primary component of dry air at sea level?

    Nitrogen makes up 78.084% of dry air.

    How does nitrogen's triple bond affect its reactivity?

    The strong triple bond makes nitrogen unreactive under normal conditions.

    What is the boiling point of liquid nitrogen?

    -196°C.

    What is the oxidation state of nitrogen in ammonia?

    -3.

    What happens when nitrogen reacts with oxygen at high temperatures?

    It forms nitric oxide (NO).

    What is the primary use of nitrogen in food packaging?

    To exclude oxygen and prevent spoilage.

    What is the most common oxidation state of phosphorus?

    +5.

    How does white phosphorus differ from red phosphorus?

    White phosphorus is highly reactive and toxic, while red phosphorus is more stable.

    What is the main component of phosphate rock?

    Calcium phosphate (Ca3(PO4)2).

    What is the primary acid formed from phosphorus oxides?

    Phosphoric acid (H3PO4).

    What is the role of nitrogen-fixing bacteria?

    They convert atmospheric nitrogen into ammonia.

    What is the significance of carbon-14 in dating?

    It is used for radiocarbon dating of organic materials.

    What is the structure of diamond?

    Each carbon atom is tetrahedrally bonded to four others.

    What is the primary greenhouse gas produced by human activities?

    Carbon dioxide (CO2).

    What is the effect of carbon monoxide on hemoglobin?

    It binds to hemoglobin more effectively than oxygen.

    What is the process of photosynthesis?

    Plants convert carbon dioxide and water into glucose using sunlight.

    What is the primary use of ammonia in agriculture?

    As a fertilizer.

    What is the main hazard of hydrogen cyanide?

    It inhibits cellular respiration.

    What is the common oxidation state of carbon in organic compounds?

    +4.

    What is the primary method for producing nitric acid?

    The Ostwald process.

    What is eutrophication?

    Water pollution caused by phosphate-rich waste leading to algae growth.