how would you prepare 100cm cube of 01M SODIUM CARBONATE AND EXPLAIN THE PROCEDURE

Answer 1

calculate mass of Na3CO3
mass=molarity*molmassNa3CO3*volumeinLiters
take that and put it in a beaker
add water to the 100ml mark
stir until dissolved
label, and store safely.

Answer 2

Na3CO3 should be Na2CO3. Those pesky numbers move when we least expect it. :-)