Question

what is the atomic mass of NaOH

Answer 1

Hello dear,
Here is your answer

atomic mass of NaOH is
23+16+1 = 40

hope it helps you

Answer 2

Atomic weight(relative atomic mass) is the number which tells us how many times an atom of that element is heavier than an atom of hydrogen,whose atomic mass is taken as unity(1).Its unit is unified atomic mass unit.

Sodium Hydroxide or caustic soda, is compound of density 2.13g\cm³.Atomic mass of NaOh is 39.99u. Simplified:

Atomic mass of Sodium = 22.99u.

Atomic mass of H 1u.

Atomic mass of O 16 u.

Thus , (16+1+22.99)u = 39.99u or simply 40u.