How do you create a 1 M soultion of Na2CO3 from 25 grams A 1

How do you create a 1 M soultion of Na2CO3 from 2.5 grams? A 1 M solution of NAHCO3 from 2.5 grams?

molar mass of Na2CO3 = 106

now to create 1M solution

molarity = mass/molarmaa* 1/V

=> 1 = 2.5/106 * 1/V => V = 0.02358 = 23.58 mL

hence dissolve 2.5 gr in 23.58 mL water to get 1M solutiong

now molarmass of NaHCO3 = 84

1 = 2.5/84 * 1/V => V = 29.76 mL

hence dissolve 2.5 gr of NaHCO3 in 29.76 mL