Question

What is the mass of $5moles$ of sodium carbonate ( $N{a_2}C{O_3}$ )?
( $Na = 23u$ $C = 12u$ $O = 16u$ )

Answer 1

The name "mole" was developed in $1896$by German chemist Wilhelm Ostwald, who derived it from the Latin word moles, which means "heap or pile. A mole is defined as the mass of a substance that is made up of the same number of fundamental units. The mole concept is a convenient way of expressing a substance's quantity.

Complete answer:
Number of moles of sodium carbonate $= 5moles$
Molar mass of sodium carbonate$= (2 \times 23) + (1 \times 12) + (3 \times 16)$
Molar mass of sodium carbonate$= 106g$
Hence, we know that $1mole$ of sodium carbonate weighs $106g$.
Mass of $5moles$ of sodium carbonate $= 5 \times 106$
Mass of $5moles$ of sodium carbonate$= 530g$
Hence, $5moles$ of sodium carbonate weighs $530g$.
The number of chemical elements is stated as a mole fraction. The value of $6.023 \times {10^{23}}$ is equal to one mole of any substance (Avogadro number). It can be used to quantify the end products of a chemical reaction. $Mol$ is the unit of measurement.
The formula for calculating the number of moles is:
$\text{Number of moles}= \dfrac{\text{Mass of substance}}{\text{Mass of one mole}}$

Note:
In chemistry, the terms molecule and molecule are used frequently. These concepts have a significant distinction and are important aspects of the chemical subject. The term "mole" is used to describe quantities that cannot be quantified in grams or milligrams units. As a result, a mole is a unit of measurement for the number of atoms, ions, or molecules. A molecule is a chemical species that is formed when many atoms are chemically bonded together.