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    Element $X$ has a mass number $A_X$ and a nuclear density of $\rho_X$.

    Question
    HLPaper 1A

    Element XXX has a mass number AXA_XAX​ and a nuclear density of ρX\rho_XρX​.

    Element YYY has a mass number that is half as large, AX2\frac{A_X}{2}2AX​​.

    What is estimated nuclear density of element YYY?

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