Calculate the mass and number of molecules of 2 mol sodium hydroxide (NaOH).

The molar mass of sodium hydroxide is:

M NaOH = 23 + 16 + 1 = 40 grams / mol;

Determine the mass of 2 mol of sodium hydroxide:

m NaOH = 2 x 40 = 80 grams;

One mole contains 6.022 x 10 ^ 23 molecules.

The number of sodium hydroxide molecules will be:

NaOH = 2 x 6.022 x 10 ^ 23 = 1.2044 x 10 ^ 24 molecules;



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.