Question

Two element A & B form two different compound A₂B & AB₃. If 0.15 mole of both compound have equal weight then what is the ratio of molar mass of A & B

Answer 1

Let molar mass of A is a 

B is b

again ⇒ 0.15 [2a + b] = 0.15 [a + 3b]

a = 2b ⇒ (a/b) = 2/1