Question

Calculate the mass of O2 i mass present in 0.1
mole of Na2 C03. 10 H2O
can anyone explain it. pls give me and soon​

Answer 1

The molar mass of  is 286 gm.

One mole of sodium carbonate decahydrate contains 13 atoms of oxygen.

1 atom of oxygen weights 16 gm.

So, Number of oxygen in 1 mole of sodium carbonate decahydrate is calculated as follows,

13 × 16 gm = 208 gm

Now to calculate mass of oxygen in 0.1 mole of ,

We can simply use the calculation and we can get the amount of oxygen.

0.1 × 208 = 20.8 gm of oxygen