A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

Any of you familiar with Avogadro Goes to Court- Case Study? I have to calculate the cost in dollars of a single aluminum atom in the roll of aluminum foil. The roll cost is $1.59, and the area of the roll is 6.96 square metres. And I am given approximately 20.0 cm by 20.0 cm (8 inch by 8 inch) section of the roll that I have cut out.

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Avogardro's number is 6.02 x 10^23

  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    My answer should be correct to three significant figures and should be reported using scientific notation. So all of the details of my calculation, including a complete dimensional analysis. HELP!! D;

  3. JFraser
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You need the cost PER ATOM, so you need to know the total # of atoms. 1) You will need the MASS of the sample you have cut. 2) Find the MOLES of aluminum in the sample you have cut (using molar mass) 3) Use avogadro's # to find the #OF ATOMS in the sample you have cut. 4) Find the % of the piece you have cut in relation to the whole roll. 5) Find the COST of that %. 6) Find the cost PER ATOM based on #5/#3. profit

  4. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohh.. to calculate the mass, I use m = sample mass (g) n = moles (mol) M = molar mass (g/mol) m = n x M

  5. JFraser
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    or a scale, since you won't know moles without mass.

  6. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    a scale?

  7. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what do you mean?

  8. JFraser
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    weigh the piece of aluminum

  9. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    but I can't..

  10. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I don't have a special scale that can weight an aluminum foil..

  11. JFraser
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Surely in your classroom there is a balance that can weigh a small object like a square of aluminum foil. If you cannot, then this problem cannot be solved. You MUST have mass to find moles using molar mass. Without that piece of information, this is just a mental exercise. The conversions can all be setup, but without the mass it cannot be completed.

  12. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohh.. i think we do have a balance, thank you!!

  13. JFraser
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yw

  14. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4) Find the % of the piece you have cut in relation to the whole roll?

  15. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.