Two elements A and B which form 0.15 moles of A_ 2 B and AB_ 3 type compounds. If both A_ 2 B and AB_ 3 weigh equally, then the atomic weight of A is _____ times of atomic weight of B.

JEE Main 2022 Chemistry question

Two elements A and B which form 0.15 moles of and type compounds. If both and weigh equally, then the atomic weight of A is times of atomic weight of B.

Answer: 2

Solution

The moles of and are equal, and so are their masses, so their molar masses

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Question ID VK-034594