Molar mass of a gas
                 
                            
                   Molar mass is the mass (in atomic mass units) of one mole of a substance. One atomic mass unit (u) is equal to 1/12 the mass of one atom of carbon-12. 
               Thus, the molecular weight of a molecule is the total number of protons and neutrons in all the atoms in that molecule.
	 
	
                    
 
                 
                            
               
                
               
                
                
                	
                	
                    	Molar mass of a gas Calculator
                     
                   
               
                  
                   
               Formula:
Molar Mass of a Gas = ( V * 0.0821 * ( G / T ) * P )
Where,
    V -> Volume
    G -> Mass of Gas
    T -> Temperature
    P -> Pressure
This online ../Chemistry allows you to dynmically calculate the molecular mass of gas.