Examples of molar mass in the following topics:




 Masstomole conversions can be facilitated by employing the molar mass as a conversion ratio.
 From the relative atomic mass of each element, it is possible to determine each element's molar mass by multiplying the molar mass constant (1 g/mol) by the atomic weight of that particular element.
 The molar mass value can be used as a conversion factor to facilitate masstomole and moletomass conversions.
 The compound's molar mass is necessary when converting from grams to moles.
 After the molar mass is determined, dimensional analysis can be used to convert from grams to moles.


 In chemistry, molar concentration, or molarity, is defined as moles of solute per total liters of solution.
 The SI unit for molarity is is mol/m3; however, you will almost always encounter molarity with the units of mol/L.
 This video demonstrates practice problems with molarity, calculating the moles and liters to find the molar concentration.
 Use molarity to convert between mass and volume in a solution.
 This video looks at how to use molarity as a conversion factor.


 Therefore, for a masstomass conversion, it is necessary to first convert one amount to moles, then use the conversion factor to find moles of the other substance, and then convert the molar value of interest back to mass.
 Taking coefficients from the reaction equation (13 O2 and 2 C4H10), the molar ratio of O2 to C4H10 is 13:2.
 The molar amount of O2 can now be easily converted back to grams of oxygen:
 But by converting the butane mass to moles (0.929 moles) and using the molar ratio (13 moles oxygen : 2 moles butane), one can find the molar amount of oxygen (6.05 moles) that reacts with 54.0 grams of butane.
 Using the molar amount of oxygen, it is then possible to find the mass of the oxygen (193 g).

