Top

Molecular Formula Calculator
Top
Molecular formula gives the idea of number of atoms present in any molecule of the given compound by calculating its molecular weight.
Molecular Formula Calculator calculates the molecular weight of any chemical formula entered in the given space. It acts as a tool to get the molecular weight instantly.

Below is given a default chemical formula, click "Calculate Molecular Formula" to calculate the molecular weight.

## Steps for Molecular Formula Calculator

Step 1 :

Read the given molecular formula. Observe the Periodic table and note down the atomic mass of the given elements.

Step 2 :

Now multiply the numbers of atoms given with its atoms mass for each element. Add all the elements to get their molecular weight.

## Problems on Molecular Formula Calculator

1. ### Find the Molecular formula for NaCl.

Step 1 :

Given Molecular formula is NaCl. The two elements are Na and Cl.
Atomic mass of Sodium = 22.98 grams/mole.
Atomic mass of chlorine = 35.45 grams/mole.

Step 2 :

Molecular weight of Sodium Chloride = No of atoms in the given molecule $\times$ Their Atomic mass.

= 1 $\times$ 22.98 + 1 $\times$ 35.45

= 58.43 grams/mole.

$\therefore$ The Molecular weight of Sodium Chloride is 58.43 grams/mole.

2. ### Find the Molecular formula forGlucose.

Step 1 :

Given Comound is Glucose. Its chemical formula is CH2O. The elements given are C, H, O.
Atomic mass of Carbon = 12.0107 grams/mole.
Atomic mass of Hydrogen = 1.00794 grams/mole
Atomic mass of Oxygen = 15.9994 grams/mole.

Step 2 :

Molecular weight of Glucose = No of atoms in the given molecule $\times$ Their Atomic mass.

= 1 $\times$ 12.0107 + 2 $\times$ 1.00794 + 1 $\times$ 15.9994

= 30.02598 grams/mole.

$\therefore$ The Molecular formula for Glucose is 30.02598 grams/mole.