Sodium chloride is a compound not an element; the molar mass of NaCl is 58,44 g.
The ionic bonding in sodium chloride is much stronger than the internal bonding in either element that forms sodium chloride; therefore, the melting point of the salt is much higher than that of either element that forms the salt.
Both contain the element sodium. Ohter than that there is not much similarities. soap is generally sodium hydroxide.
There is no chlorine present in NaCl (sodium chloride). Sodium chloride is made up of sodium ions (Na+) and chloride ions (Cl-), but the element chlorine itself is not present in its elemental form in NaCl.
A mole is not a unit of weight. A mole tells you how many atoms or molecules you have of a given substance (that number being 6.023 x 1023 which is also known as Avogadro's number). So, depending upon what substance you are dealing with, the weight can vary tremendously. A mole of uranium is much heavier than a mole of hydrogen.
Salinity (or 'saltiness') is due to the compound sodium chloride, written NaCl, and adding more of this will increase the salinity. However never add metallic sodium to water, it produces a violent and dangerous reaction. So when you say 'adding sodium to chloride' I'm not sure what you mean. The compound sodium chloride is just cooking salt and quite harmless and you can add as much of that as you like, but sodium as an element is a different matter.
Normal saline solution has a sodium chloride concentration of 9 g/L.
When a mixture of sodium chloride and water is heated to dryness, the residue is sodium chloride, because the boiling point of sodium chloride is much higher than the boiling point of water.
1 atom in each molecule (60,33417 %)
This depends on the sodium chloride concentration; higher the concentration, higher the density.
A normal vinegar didn't contain sodium chloride.
The solubility of sodium chloride in water is 360,0 g/L at 20 0C.
To make a 1M solution of sodium chloride in 1 liter of water, you would need 58.44 grams of sodium chloride. This is based on the molecular weight of sodium chloride, which is 58.44 g/mol.