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Questions and Answers
Which chemical formula represents water?
Which chemical formula represents water?
- H2O2
- H2O (correct)
- H2O3
- CO2
What is the angle between the hydrogen atoms and the oxygen atom in a water molecule?
What is the angle between the hydrogen atoms and the oxygen atom in a water molecule?
- 180°
- 90°
- 120°
- 104.45° (correct)
What is the name of the liquid state of H2O at standard temperature and pressure?
What is the name of the liquid state of H2O at standard temperature and pressure?
- Solid
- Water (correct)
- Gas
- Vapor
What is the main constituent of Earth's hydrosphere and the fluids of all known living organisms?
What is the main constituent of Earth's hydrosphere and the fluids of all known living organisms?
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In what forms does water exist on Earth?
In what forms does water exist on Earth?
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