One mole of element X has 0.444 times the mass of one mole of element Y. One atom of element X has 2.96 times the mass of one atom of 12C. What is the atomic weight of Y ?

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15.77

46.67

40.0

answer is A.

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Detailed Solution

Molar mass of x = 0,444 x molar mass of yMolar mass of x = 2.96 x12Molar mass of y=2.96×120.444=80

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