Question

How many grams of carbon will have the same no.Of atoms as 4g of ca.?

Answer 1

Answer:

2g of Ne has the same no of atoms as 4g of Ca. there fore x=2 g of the neon is necessary for the same no. of atoms in 4 g of Ca. from this x's values comes as 2g. Therefore weight of Ne = 2g.

Answer 2

Answer:

Mass of 1 atom of Ne = 20/6.022*10²³ g

Now,

Number of particles in 4 g of Ca,

= 4/40*6.022*10²³

= 6.022*10²² atoms

Therefore, number of atoms of Ne same as 4 g of Ca 

= 20*6.022*10²²/6.022*10²³

=20/10

=2 g

hope you get it.......