Question

How do you find the molar mass of dihydrogen dioxide?

Answer 1

The molar mass is calculated by adding the atomic weight of each atom present in the compound and multiplying the number of atoms with the atomic weight. The molecular formula of dihydrogen dioxide is ${H_2}{O_2}$. It contains two hydrogen atoms and two oxygen atoms.

Complete step by step answer:
The dihydrogen dioxide is the chemical compound containing two hydrogen and two oxygen. The chemical formula or molecular formula of dihydrogen dioxide is ${H_2}{O_2}$.
The molar mass is also known as molecular weight. The molecular weight is defined as the sum of the atomic weight of the atom present in the compound and multiplying the number of atoms with the atomic weight. The unit of molecular weight is gram per mole. It is represented in terms of g/mol.
The atomic weight is defined as the average mass of the atom present in the compound which is obtained by the relative abundance of the isotopes.
The atomic weight of Hydrogen is 1.008.
The atomic weight of oxygen is 15.9994
In hydrogen peroxide ${H_2}{O_2}$, two hydrogen atom are present so total mass $\Rightarrow 2 \times 1.008 = 2.016$
Two oxygen atoms are present so total mass $\Rightarrow 2 \times 15.994 = 31.988$
The molar mass of dihydrogen dioxide is calculated as shown below.
$\Rightarrow molar\;mass = 2.016 + 31.988$
$\Rightarrow molar\;mass = 34.004$g/mol.
Therefore, the molecular weight or molar mass of dihydrogen dioxide is 34.004 g/mol.

Note:
Don’t get confused by the molecular formula ${H_2}{O_2}$ as the compound containing two hydrogen and two oxygen is commonly known as hydrogen peroxide. Both dihydrogen dioxide and hydrogen peroxide are the same compound.