Concept explainers
Interpretation:
The process for determining the molar mass of sodium chloride
Concept Introduction:
The ratio of mass of the given compound to the number of moles of compound is known as molar mass.
Mole is SI unit which is used to measure the quantity of the substance. It is the quantity of a substance which contains same number of atoms as present in accurately 12.00 g of carbon-12 is known as mole.
The one mole of any substance is equal to the
Answer to Problem 1E
Molar mass of sodium chloride is
Explanation of Solution
Molar mass of the molecule is calculated by the sum of the masses of atoms present in the molecule.
The given molecule is
First step is to determine the number of atoms present in the molecule.
In the given molecule that is sodium chloride, number of atoms is two that is one sodium atom and one chlorine atom.
Second step is to determine the atomic masses of an atom.
From periodic table,
Atomic mass of chlorine = 35.35 g/mole
Now, molar mass of sodium chloride is calculated as:
Molar mass of
Put the values,
Molar mass of
=
Therefore, molar mass is calculated by sum of mass of atoms present in the sodium chloride molecule.
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