The atomic weights of two elements \( A \) and \( B \) are 40 and 80 respectively. If \( x \math...
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5The atomic weights of two elements \( A \) and \( B \) are 40 and 80 respectively. If \( x \mathrm{~g} \) of A contains \( y \) atoms, how many atoms are present in \( 2 x \mathrm{~g} \) of \( \mathrm{B} \) ?
(A) \( \frac{y}{2} \)
(B) \( \frac{y}{4} \)
(C) \( y \)
(D) \( 2 y \)
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