Question

One molecule of a compound weighs 2.03x10-22 g. what is the molar mass of that compound?

Answer 1

The molar mass of the given compound is $\boxed{122.2{\text{ g/mol}}}$.

Further Explanation:

Molar mass:

The molar mass is the summation of masses of all atoms or molecule present in the 1 mole of compound. In other words, molar mass of a compound is the ratio of mass of compound in grams to the number of moles present of that compound. The S.I unit of molar mass is gram per mol or g/mol.

Mass of one molecule of a given compound is $2.03\times{10^{-22}}{\text{g}}$.

According to Avogadro's number, the number of atoms or molecules present in the 1 mole of a substance is ${\mathbf{6}}{\mathbf{.022\times1}}{{\mathbf{0}}^{{\mathbf{23}}}}$.

Therefore, to calculate the mass of 1 mole of atoms, we have to multiply the mass of one molecule with the number of molecules present in 1 mole of given compound that is $6.022\times{10^{23}}$.

The calculation for molar mass gives as follows:

$\begin{gathered} {\text{Molar mass}} = \left( {{\text{mass of 1 molecule}}\left( {\text{g}} \right)} \right)\left({{\text{number of molecules in 1 mole substance}}}\right)\\=\left({2.03\times{{10}^{-22}}{\text{g}}}\right)\left({6.022\times{{10}^{23}}{\text{ mo}}{{\text{l}}^{-1}}}\right)\\=\left({2.03\times 6.022}\right)\times{\text{1}}{{\text{0}}^{-22+23}}{\text{ g/mol}}\\=122.2{\text{ g/mol}}\\\end{gathered}$

The value mass of 1 mole of given molecule is 122.2 g/mol.

Learn more:

1. Determined the mass of ammonia product formed in the reaction: brainly.com/question/6078553

2. Determine how many moles of water produce: brainly.com/question/1405182

Answer details:

Grade: Senior school

Subject: Chemistry

Chapter: Mole concept

Keywords: Potassium, molar mass, moles, atomic mass, number of moles, number of atoms, given mass, ratio, substance, g/mol grams, 78.20 grams, 2 moles, 39.098 g/mol, number of moles of potassium.

Answer 2

The molar mass of the compound is 122 g.