An unknown mass of Na2O (molar mass=61.979 g/mol) was dissolved in enough water to create a 150.0 mL stock solution. A 5.00 mL sample of the stock solution was transferred to a volumetric flask and diluted to 500.0 mL . The pH of the dilute solution is 13.15 .

Respuesta :

The molar mass of atoms of an element is given by the relative atomic mass of the element multiplied by the molar mass constant, Mu = 0.99999999965(30)×10−3 kg⋅mol−1.

How do you find a molar mass?

To calculate the molar mass of a molecule, we first obtain the atomic weights from the individual elements in a periodic table. We then count the number of atoms and multiply it by the individual atomic masses. Lastly, we add all the atomic masses together to get the molar mass.

What is difference between molecular mass and molar mass?

Molar mass is generally defined as the mass of Avogadro number of atoms, molecules or compounds while molecular mass is defined as the sum of atomic masses of all the atoms which are present in the given molecule or compound.

Learn more about molar mass here:

https://brainly.com/question/837939

#SPJ4