Chemistry

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The density of aluminum is . A square piece of aluminum foil, 20.02 on a side is found to weigh 2.573 .What is the thickness of the foil, in millimeters?

  • Chemistry -

    You didn't provide the density.
    20.02 what?
    2.573 what?
    We just went through this you first post. You should catch on soon that these problems don't mean a thing without units.
    If I weigh 150 WHAT that could be 150 pounds, 150 kg, 150 tons, 150 grams.

  • Chemistry -

    when I was copying and pasting the problem the units and numbers did not transfer... I completely understand that you need these units

  • Chemistry -

    The density of aluminum is 2.70 g/cm^3. A square piece of aluminum foil, 20.02 on a side is found to weigh 2.573g. What is the thickness of the foil, in millimeters?

  • Chemistry -

    20.02cm*

  • Chemistry -

    density = mass/volume. You have the mass and density, solve for volume, then substitute volume into the below equation and solve for thickness.
    volume = length x width x thickness.
    v = 20.02 x 20.02 x thickness.

  • Chemistry -

    thank you

  • Chemistry -

    is the answer 4218.95 mm?

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