Elements X and Y combine to …
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Gaurav Seth 4 years, 11 months ago
let atomic weight of x = Mx
atomic weight of y = My
we know,
mole = weight /atomic weight
a/c to question,
mole of xy2 = 0.1
so,
0.1 = 10g/( Mx +2My)
Mx + 2My = 100g -------(1)
for x3y2 ; mole of x3y2 = 0.05
0.05 = 9/( 3Mx + 2My )
3Mx + 2My = 9/0.05 = 9× 20 = 180 g ---(2)
solve eqns (1) and (2)
2Mx = 80
Mx = 40g/mol
and My = 30g/mole
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