Question

What is the weight of one mole of $NaCl$?

Answer 1

We need to know that the $NaCl$ is an inorganic salt known as Sodium chloride. It contains two types of elements: sodium and chlorine. A mole is defined as $6.02214076 \times {10^{23}}$ of some chemical unit, be it atoms, molecules, ions, or others. Sodium chloride, commonly known as salt, is an ionic compound with the chemical formula $NaCl$, representing a $1:1$ ratio of sodium and chloride ions.

Complete answer:
To solve this question we must know before what exactly the atomic mass of the particular element, atom or ion or compound given. Firstly we need to calculate the atomic mass of $NaCl$ .The atomic mass of sodium is $23$ and atomic mass of chlorine is $35$. In total the atomic mass of sodium chloride comes out by adding the individual masses of all the atoms so the atomic mass of sodium chloride is $23 + 35$, so the mass comes out to be $58g/mol$. One mole of sodium chloride contains $58g$ , so one mole of sodium chloride will be 58g. Number of moles can be calculated by using the formula given weight of any element or compound divided by the molecular weight of the same element or compound given.

Note:
The mass of a mole of substance is called the molar mass of that substance. The molar mass is used to convert grams of a substance to moles and is used often in chemistry. The molar mass of an element is found on the periodic table, and it is the element's atomic weight in $g/mol$ .If the mass of a substance is known, the number of moles in the substance can be calculated.