Question

28. A compound of X and Y has equal mass of them. If
their atomic weights are 30 and 20 respectively.
Molecular formula of the compound is :-
(1) X,Y, (2) X,Y, (3) X,Y (4) X,Y,
MC0031
21
1
om
32

Answer 1

Answer:

let the mass of X be 30 g

therefore ,the mass of Y will be 30 g

(moles of X =30/30)/ (moles of Y = 30/20) = 1/1.5 = 2/3

X:Y= 2:3

exprical formula = X2 Y3

molecular weight of X2 Y3= 2x30+3x20

= 60+60

= 120

the compound of X2 Y3