Question

How many.Grams of na will have the same no of atoms as 6g of mg?

Answer 1

No of moles of Mg= 6/24 = 0.25

No of moles of Mg= No of moles of Na (for same number of atoms)

No o moles of Na =x/23

0.25=x/23

x=5.75g

Answer 2

24g of Mg....... contains...... =NA atoms
1g of Mg......... contains........ =1/24 NA atoms
then, 6g of Mg...... contains....=1/24×6NA atoms
6g of Mg contains.... =NA/4atoms
23g of Na....... contains......... =NA atoms
1g of Na will contain..........=NA/23atoms
we have to find how many grams of Na contain NA/4atoms .....,
no. of grams of Na =NA/4is divided by NA/23
then, we get
no. of grams of Na =5.75g

Hope this will help you!!!!!