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A 13.5 g sample of X reacts with a sample of Y to form 81.1 g of XY. What is the mass of Y that reacted?

  • chemistry -

    ...........X + Y = XY
    So 13.5 + ? = 81.1
    Solve for ?

  • chemistry -

    X+Y= XY
    13.5 g = X
    = 13.5 %

    100%-13.5%= 86.5% Y
    = 86.6g Y

    Mass of Y that reacted= 86.6%

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