(Tw) elements A and B combine to form compound \( \mathrm{X} \) and Y. For the fixed mass of \( ...

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(Tw) elements A and B combine to form compound \( \mathrm{X} \) and Y. For the fixed mass of \( \mathrm{A} \), masses of \( \mathrm{B} \) combined for the compounds \( X \) and \( Y \) are in 3:7 ratio. If in compound \( X, 4 \mathrm{~g} \) of \( \mathrm{A} \) combines with \( 12 \mathrm{~g} \mathrm{~B} \), then in compound \( \mathrm{Y}, 8 \mathrm{~g} \) of \( \mathrm{A} \) will combine with ...... g of B.(a) 24(b) 56(c) 28
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