Answer:
the quantity of heat required to raise the temperature of 1 gram of a substance by 1 C
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Answer:
Because of the existence of isotopes.
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Answer:
14 is this value for a molecule of
.
Explanation:
Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.
In the Lewis-dot structure the valance electrons are shown by 'dot'.
Number of total outer valence electrons is carbon = 4
Number of total outer valence electrons is hydrogen = 1
Number of total outer valence electrons is chlorine = 7
For total number of outer electrons is 

14 is this value for a molecule of
.