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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.
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.

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Avogardro's number is 6.02 x 10^23

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0My 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;

JFraser
 5 years ago
Best ResponseYou've already chosen the best response.1You 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

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ohh.. to calculate the mass, I use m = sample mass (g) n = moles (mol) M = molar mass (g/mol) m = n x M

JFraser
 5 years ago
Best ResponseYou've already chosen the best response.1or a scale, since you won't know moles without mass.

JFraser
 5 years ago
Best ResponseYou've already chosen the best response.1weigh the piece of aluminum

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I don't have a special scale that can weight an aluminum foil..

JFraser
 5 years ago
Best ResponseYou've already chosen the best response.1Surely 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.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ohh.. i think we do have a balance, thank you!!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.04) Find the % of the piece you have cut in relation to the whole roll?
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