How many grams of 970 pure NaOH pellets do you need to make

How many grams of 97.0% pure NaOH pellets do you need to make 1.000 liter of 1.50 N NaOH?

Solution

no of moles of NaOH=1.5

Grams=1.5*40=60gms61.8gms

x=60*100/97

x=61.85gms