The atomic masses of two elements \( A \) and \( B \) are 20 and 40 respectively. If \( x \mathr...

Описание к видео The atomic masses of two elements \( A \) and \( B \) are 20 and 40 respectively. If \( x \mathr...

The atomic masses of two elements \( A \) and \( B \) are 20 and 40 respectively. If \( x \mathrm{~g} \) of \( A \) contains \( y \) atoms, how many atoms are present in \( 2 x \) g of \( B \) ?
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