What is the molar quantity of a #0.40*g# mass of sodium hydroxide?

1 Answer
Sep 2, 2017

Answer:

As always we take the quotient: #"Number of moles"="Mass"/"Molar mass"#

Explanation:

And we gets an answer with units of moles.....

i.e. #"Number of moles"=(4*g)/(40*g*mol^-1)=0.1*mol.#

How many mole of sodium ion, and how many mole of hydroxide ion?