Question

5) One element X has 0.444 times, the mass of one mole of element "Y" one average

atom of element (X) has 2.96 times the mass of atom of 6C12, what is the atomic weight
of "Y"?
B) 15.77
C) 46.67
(A) 80
D) 40​

Answer 1

The atomic weight of the "y" compound is 80.

Step-by-step explanation:

The carbon atomic weight = 12 g/mol

Atomic weight of "X" =
`2.96* 2`

One mole of "X" element has mass 0.444 times the mass of one mole of element "Y".

So, atomic weight of "X" element =
`0.444* Atomic\,weight\,of\,y`

`Atomic\,weight\,of\,y= (Weight\,of\,X)/(0.444)`

`= (2.96* 2)/(0.444)= 80.7\equiv 80`

Therefore, The atomic weight of the "y" compound is 80.