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Please help!
How many moles of hydrogen are needed to triple the volume occupied by 0.25 mol of hydrogen, assuming no changes in pressure or temperature

  • Chemistry - ,

    You can figure this yourself two ways.
    1. intuitive. You figure 3 times 0.25 should occupy 3 times as much.
    2. with math. PV = nRT and solve for
    V = nRT/P. If R, T, and P are constant, then
    V = n*some k.
    So if we want V to be 3x, we need to have 3n*k.

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