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Mole Calculator
To use Mole Calculator, select what you want to calculate, fill in the required data values, and press calculate button
Table of Contents:
Mole Calculator
Mole calculator finds the number of moles of an object when the mass and molecular weight are known. It also finds the object's mass and molecular weight by giving the formula's corresponding values.
What is a Mole?
The mass of a system whose elementary constituents total the number of atoms in 0.012 kilograms of carbon 12. The symbol is ‘mol’ to represent the unit of the amount of substance.
Formula
To calculate the mole of a substance, we have a mathematical formula to get the appropriate answer.
mol = m/w
where
- m is the mass of the substance.
- w is the molecular weight of the substance.
- mol represents the mole of the object.
How to find the unknown term of the mole formula?
Example 1:
You have 50 grams of carbon dioxide. What is the number of moles?
Solution
Step 1: Firstly, we have to find the molecular weight of the substance
The molar mass of the carbon = 12
The molar mass of the oxygen = 16
Total molecular weight = (1) (12) +(2) (16)
Total molecular weight = 44
Step 2: Now apply the formula
Mole = mass / molecular weight
mole = 50 / 44
mole= 1.13 mol
Example 2:
Find the mass of the substance when the number of moles is 1.5 mol and the molecular weight is 10 g/mol.
Solution:
Step 1: Given data is
molecular weight = 10 g/mol
number of moles = 1.5 mol
mass=?
Step 2: Use the formula to calculate the mass of the object.
Mole = mass / molecular weight
Mass = (mole) (molecular weight)
Mass = (1.5) (10)
Mass = 15 mol