Question

What is the molar mass of Sodium Carbonate?

Answer 1

Hint: Molar mass is defined as the mass of the compound in grams in one mole of that particular compound. It is normally associated with the number of moles. We will discuss more about molar mass and how it is calculated in this question.

Complete answer:
Molar mass is the total mass of all the atoms contained by a compound in grams that makes a mole of that particular compound. Sodium carbonate has the molecular formula $ N{a_2}C{O_3} $ .
for calculating the molar mass, we should know the Molar mass of atoms that are forming the compound. Sodium carbonate contains two atoms of Sodium, one atom of Carbon, three atoms of oxygen. so, writing the molar mass of these atoms
Molar mass of Sodium, $ Na = 23gmo{l^{ - 1}} $
Molar mass of Carbon, $ C = 12gmo{l^{ - 1}} $
Molar mass of Oxygen, $ O = 16gmo{l^{ - 1}} $
Now for calculating the molar mass we multiply the number of atoms with their respective molar mass and add them, Sodium has two atoms its molar mass will be multiplied by two, Carbon has one atom in this compound so it will be multiplied by one and molar mass of oxygen will be multiplied by three because it has three atoms in this compound, we will add the all products to get the molar mass of sodium carbonate.
$ M = 2 \times 23 + 1 \times 12 + 3 \times 16 $
 $ M = 46 + 12 + 48 $
we get,
$ M = 106gmo{l^{ - 1}} $
Therefore, the molar mass of Sodium carbonate is $ 106gmo{l^{ - 1}} $.

Note:
Carefully see the molecular formula of the compound for identifying the number of atoms of each element because it is necessary for calculation of molar mass of the compound. Also write the molar mass of elements in advance so calculation can be easy.