What is an atomic mass of NaOH ?

An atomic mass unit is equal to 1/12th of the mass of a single carbon-12 atom. Because different isotopes of an element have different masses, the atomic mass of an element is a weighted average of the masses of all the element’s naturally occurring isotopes. Element Sodium (Na), Group 1, Atomic Number 11, s-block, Mass 22.990. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Sodium is a metallic element on the periodic table with an atomic number of 11 and an atomic mass of 22.98 amu. This atomic mass is calculated by adding together the number of protons and neutrons present in the atom's nucleus. Sodium was discovered by Sir Humphrey Davy in 1807. Let us start by calculating the formula mass of sodium chloride (NaCl). This formula mass is the sum of the atomic masses of one sodium atom and one chlorine atom, which we find from the periodic table; here, we use the masses to two decimal places: Na: 22.99 amu. Total: 58.44 amu.

1 Answer

Well, what is the molar mass of sodium hydroxide....?

Explanation:

The molar mass of sodium hydroxide is #40.00*g*mol^-1#...

Atomic Mass Of Sodium

But this, BY DEFINITION, specifies the mass of #'Avogadro's number'# formula units of sodium hydroxide....i.e. #6.022xx10^23*'formula units of sodium hydroxide per mole.'#

Atomic Mass Of Sodium 24

Atomic Mass Of Sodium

Atomic Mass Of Sodium Sulfate

And thus the mass of ONE formula unit of sodium hydroxide is given by the quotient....

#'mass'_'one formula unit of NaOH'=(40.00*g*mol^-1)/(6.022xx10^23*mol^-1)#

#=6.641xx10^-23*g#...

Atomic Mass Of Sodium Hydroxide

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