Which must be the same when comparing 1 mol of oxygen gas, O2, with 1 mol of carbon
2 answers:
Answer : The correct option is, (C)the number of molecules
Explanation :
When we are comparing 1 mole of oxygen gas with 1 mole of carbon monoxide gas
then we conclude that,
In 1 mole of oxygen gas , there are two number of molecules of oxygen.
In 1 mole of carbon monoxide gas , there are two number of molecules (carbon and oxygen).
Hence, the number of molecules must be the same when comparing 1 mole of oxygen gas, with 1 mole of carbon monoxide gas.
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Answer: The oxygen atom in a water molecule carries a negative electrical charge.
Explanation:
A polar covalent bond is defined as the bond which is formed when there is a difference of electronegativities between the atoms.
Hydrogen bonding (H-bonding) is an intermolecular force having partial ionic-covalent character. H-bonding takes place between a hydrogen atom (attached with an electronegative atom e.g. O, N and F) and an electronegative atom (O,N and F).
In , , O is a highly electronegative atom attached to a H atom through a covalent bond. Therefore O atom gets partial negative charge and H atoms get partial positive charge.