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A certain compound has the molecular for...

A certain compound has the molecular formula `X_(4)O_(6)`. If 10g of `X_(4)O_(6)` has 5.72g X, the atomic mass of X is:

A

32 amu

B

37 amu

C

42 amu

D

98 amu

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Verified by Experts

The correct Answer is:
A
Let the atomic weight of X be .x., 1 mol of `X_(4)O_(6)=4` mol of X
`("wt. of "X_(4)O_(6))/("At. wt. of "X_(4)O_(6))=("wt.of X")/("At. wt. of 4X")implies(10)/(4x+6xx16)=(5.72)/(4x) therefore x=32` amu
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