Why do we use formula mass instead of molecular mass?

In ionic compounds , formula of the compound does not represent its molecule ,but only the ratio of the different ions in which they form the compound . This is called formula unit of the compound . So in ionic compounds we do not use the term molecular mass we use the term formula mass .

Is Formula mass the same as molecular mass?

The formula mass of a substance is the sum of the average atomic masses of each atom represented in the chemical formula and is expressed in atomic mass units. The formula mass of a covalent compound is also called the molecular mass.

What is the molecular mass of NaF?

41.98817 g/mol
Sodium fluoride/Molar mass

What is difference between formula unit and molecular formula?

A molecule is composed of two or more elements that are covalently bonded. A formula unit indicates the lowest whole number ratio of ions in an ionic compound.

Which of the following formula mass is preferred over molecular mass?

Among the given compounds, the formula mass is preferred over molecular mass in KCl.

What is the percentage composition by mass m of fluorine in NaF?

Mass percentage of the elements in the composition

How can you differentiate between molecular formula and empirical formula?

Empirical Formula Vs Molecular Formula An empirical formula represents the simplest whole-number ratio of various atoms present in a compound. The molecular formula shows the exact number of different types of atoms present in a molecule of a compound.

How will you convert the mass of a given sample to the number of moles and vice versa?

To convert between mass and number of moles, you can use the molar mass of the substance. Then, you can use Avogadro’s number to convert the number of moles to number of atoms.

What is molecular mass of hno3?

63.01 g/mol
Nitric acid/Molar mass