Oxygen as a simple substance is spoken of in the judgment: 1) oxygen is part of sulfuric acid
| September 23, 2021 | education
Oxygen as a simple substance is spoken of in the judgment: 1) oxygen is part of sulfuric acid 2) oxygen is heavier than air 3) there is oxygen in glucose 4) the mass fraction of oxygen in water is 89%
1) Oxygen is part of sulfuric acid – the wrong answer, since oxygen is a chemical element, not a substance.
2) Oxygen is heavier than air – the correct answer.
3) There is oxygen in glucose – the wrong answer, since oxygen means a chemical element, not a substance.
4) The mass fraction of oxygen in water is 89% – an incorrect answer, since oxygen is a chemical element, not a substance.
Answer: 2) Oxygen is heavier than air.
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