Question

1 atom of X, 2 atoms of Y and 3 atoms of Z combine
together to give a molecule XY,Z3. Now we take 10
gm of X and 2 x 1023 atoms of Y and 0.06 moles of Z
in a container, to give 5.6 gm of XY Zg. What is the
molar mass of Z?
Given : My = 60 gm/mol My = 80 gm/mol​

Answer 1

Explanation:

Molecular formula =XY2 Z 3

10^23 , atomic weight of Y=y

Molecular mass =60+240+2y

=300+2y

1.15×10 ^23

atoms of Y≃2 mol of Y

∴ Limiting agent is Z .

∴ No. of moles of compound = 30.03

=0.01

∴ Molecular mass = 0.01

4.40

=440

⇒300+2y=440

⇒y=70