Depending on the purity and form (wire, powder, granules, ingot etc.).
For orientation: 6 US cents.
Depends on the type of aluminum. Aluminum price varies depends on what its alloyed with.
well if you want to know it is $60.99 for 6 grams
i think it's about 5cents
depends where you get it
1 million per gram
5 grams
Aluminum foil is pure elemental aluminum in very thin sheets. It's a 100%, or, to be more precise, 99.99% aluminum.
The composition of aluminum foil is NOT 100% pure aluminum, as many people believe. You may have noticed that aluminum foil always seems dull on one side, and shiny on the other. This is caused by a naturally-occurring reaction. When Aluminum comes into contact with oxygen, the two elements undergo a spontaneous reaction: 4 Al(S) + 3 O2 (G) => 2 Al2O3 (S) The aluminum foil reacts with oxygen in the air to form a thin layer of Aluminum Oxide on one side of the foil. Because rolls of aluminum foil are generally rolled tightly, the inner side of the aluminum foil is not exposed to the air as much, and it remains shiny. In short, the composition of aluminum foil is pure aluminum (Al) AND aluminum oxide (AL2O3). (And don't worry-- the layer of aluminum oxide on aluminum foil is completely harmless. We've been using foil to cover food for years, after all.)
"Tin foil" is usually made of (mostly) aluminum. As with any metal, there is a certain amount of impurity present within it (carbon, other metals, etc.). Additionally, aluminum is a very reactive metal, so there is always a thin layer of aluminum oxide (Al2O3) on the surface.
Me personally I would say that plastic wrap keeps things colder because it keeps things better contained than aluminum foil. See aluminum foil rips easily than plastic wrap. So I would say plastic wrap.
15 cents
5 grams
Aluminum foil is pure elemental aluminum in very thin sheets. It's a 100%, or, to be more precise, 99.99% aluminum.
The composition of aluminum foil is NOT 100% pure aluminum, as many people believe. You may have noticed that aluminum foil always seems dull on one side, and shiny on the other. This is caused by a naturally-occurring reaction. When Aluminum comes into contact with oxygen, the two elements undergo a spontaneous reaction: 4 Al(S) + 3 O2 (G) => 2 Al2O3 (S) The aluminum foil reacts with oxygen in the air to form a thin layer of Aluminum Oxide on one side of the foil. Because rolls of aluminum foil are generally rolled tightly, the inner side of the aluminum foil is not exposed to the air as much, and it remains shiny. In short, the composition of aluminum foil is pure aluminum (Al) AND aluminum oxide (AL2O3). (And don't worry-- the layer of aluminum oxide on aluminum foil is completely harmless. We've been using foil to cover food for years, after all.)
"Tin foil" is usually made of (mostly) aluminum. As with any metal, there is a certain amount of impurity present within it (carbon, other metals, etc.). Additionally, aluminum is a very reactive metal, so there is always a thin layer of aluminum oxide (Al2O3) on the surface.
The rate at which water freezes depends on the thermal conductivity of the container. Plastic is generally not very thermally conductive, whereas aluminum foil is more thermally conductive. Thus, as long as the foil is not very much thinner than the plastic, the water will freeze faster in the foil.
Aluminum foil is a better heat insulator than newspaper. Aluminum foil reflects thermal energy, while newspaper absorbs and conducts heat. Therefore, aluminum foil will help keep heat in or out more effectively.
We can't tell that from the density. All we know is that however much aluminum foil you have ... whether it's a tiny scrap or a truckload ... each cm3 of it has 2.7g of mass.
$11,000 per ounce
A ounce of gold costs 500dollars
19.99 an ounce
An ounce of rice is about 48 cents, an ounce of gold is about $ 1,160