12. Calculate the mass of 0.125 mol NaOH.
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Explanation:
According To Avogadro Law
1 mole every substance 22 . 4 l
Avogadro Number 6.023 × 10^23 particles
We know that very well
1 mole sodium hydroxide ( NaoH) = 40 g / mole
0.125 mole of sodium hydroxide ( NaoH)
Weight = 40/1 × 0.125
weight = 5g/mole
The weight of 5g/mole
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