Question

How are 0.5 m of Naoh different from 0.5M Naoh?

Answer 1

0. 5m of Naoh value is in molality and 0. 5M Naoh value is in molarity.
m- indicates the units of molality.
M-indicates the units of molarity.

Answer 2

Here 0.50 mol of sodium hydroxide refers to the number of moles whereas 0.50 M refers to the molarity of sodium hydroxide .

Number of moles = given mass/molar mass
Molarity = No. of moles / volume of solution in L