Question

sodium carbonate, decahydrate (Na2CO3.10H2O)
(Ans:286g/mol)​

Answer 1

Answer: Na2CO3 is a basic salt belonging to the sodium family. It exists in crystalline form with 10 water molecules. This turns it into the familiar washing soda.

The molar mass of Na2CO3•10H20 is:

We know the following atomic masses:

Na = 23 u

C = 12 u

O = 16 u

H = 1 u

Therefore 23*2+12+16*3+10*2*1+16

= 46+12+48+10*18

= 58+48+180

= 106+180

= 286 u.

Therefore the molar mass of Na2CO3•10H2O is 286g.

Answer 2

Explanation:

therefore the molar mass of

Na2CO3.10H2O

hope you are done