ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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H20
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CO2
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CH4
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NH3
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Detailed explanation-1: -For example, the molecular formula of water is H2O, which means that one molecule of water contains two atoms of hydrogen and one atom of oxygen.
Detailed explanation-2: -Meaning of H2O in English the chemical symbol for water; used to refer to the substance water: H2O means that each water molecule contains one oxygen and two hydrogen atoms.
Detailed explanation-3: -Its chemical formula, H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. “Water” is also the name of the liquid state of H2O at standard temperature and pressure.
Detailed explanation-4: -It is considered to be incorrect. Why? Oxygen does not occur as oxygen atoms (O) but as oxygen molecules (O2) and so the above reaction should be written with oxygen molecule and then balanced as: 2H2 + O2