Question

to calculate the moles..5.3 gm tg Na2 Co3

Answer 1

Moles of Na2CO3=5.3/106=0.05

So moles of Na=0.05×2=0.1

Moles of C=0.05×1=0.05

Moles of O=0.05×3=0.15

And if u want to find also the no. of atoms of each type by multiplying the no. of moles by Avagadro's
constant.

Hope it helps:-)