Which of the following is not equal to 1 mole of substance?
1 answer:
Answer : The one mole atom of carbon is not equal to 1 mole of substance.
Explanation :
As we know that,
number of hydrogen molecules present in 1 mole of substance.
and,
At STP, 22.4 L volume of hydrogen gas present in 1 mole of substance
and,
number of sodium molecules present in 1 mole of substance.
and,
number of gold molecules present in 1 mole of substance.
All these options are equal to the 1 mole of substance.
While the option, one mole atom of carbon is not equal to the 1 mole of substance because 1 mole of atom of carbon is equal to 12 grams.
Hence, the one mole atom of carbon is not equal to 1 mole of substance.
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There are four different representations of the orientation of water molecules around chloride anion. Let's first analyze the water molecule.
We have H-O-H as the structure of water. The oxygen atom is more electronegative than the hydrogen atoms, which results in a partial positive charge on the hydrogen atoms and a partial negative charge on the oxygen atom.
The chloride anion is a negative charge. Therefore, the water molecules should orient themselves with the hydrogen atoms facing the chlorine atom as the partial positive charge on the hydrogen atoms will be attracted to the negative charge of the chlorine atom.
The correct representation is shown in graph 3 which shows all hydrogen atoms facing the chlorine anion.
There are four different representations of the orientation of water molecules around chloride anion. Let's first analyze the water molecule.
We have H-O-H as the structure of water. The oxygen atom is more electronegative than the hydrogen atoms, which results in a partial positive charge on the hydrogen atoms and a partial negative charge on the oxygen atom.
The chloride anion is a negative charge. Therefore, the water molecules should orient themselves with the hydrogen atoms facing the chlorine atom as the partial positive charge on the hydrogen atoms will be attracted to the negative charge of the chlorine atom.
The correct representation is shown in graph 3 which shows all hydrogen atoms facing the chlorine anion.