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Why would the increase in the price of copper cause the mint to change the composition of pennies?
An increase in the price of copper makes producing pennies more expensive. The mint may change the composition of pennies to a cheaper material to reduce production costs and maintain profitability. By using a different material, such as zinc, the mint can continue to meet demand for pennies without being significantly impacted by the rise in copper prices.
What kind of soil is best for growing Mint?
Mint grows best in well-draining, fertile soil with a slightly acidic pH of around 6.0 to 7.0. A mix of loamy or sandy soil that is rich in organic matter is ideal for growing mint plants. It is important to avoid heavy clay soil that retains water as it can lead to root rot.
What is the chemical composition of pennies and dimes?
This answer is based on two assumptions: the question is regarding a United States penny and the term 'properties' is directed toward the metallic composition of the coin. According to the U.S. Mint, a penny is made up of 97.5% zinc and only a mere 2.5% copper, the reddish-brown color metal that gives a penny it's distinct appearance.
What is the value of a 1999 liberty nickel?
The Denver mint did not issue any nickels in 1906, only Philadelphia did. A 1906 Philadelphia nickel retails at $3 to $25 depending on condition.
A copper penny was added to a sodium hydroxide solution with granulated zinc in it and turned silver then turned gold after heating and i need to know what is the chemical equation of this reaction?
Metallic zinc dissolves in the alkaline solution, producing zincate ions and releasing hydrogen: Zn + 2OH– → ZnO2-- + H2 (visible as tiny bubbles on the surface of the zinc) You can get the same solution by adding zinc oxide to sodium hydroxide. (The zincate is probably hydrated with a couple of water molecules, but they only clutter up our equations, so we'll ignore them here.) Here's where it gets interesting: When copper is in contact with zinc* (bear with me for a few moments), in a conducting solution, an electrolytic cell is produced -- you have a battery. (In fact, you have Prof. Volta's original battery!) Electrons flow from the zinc* to the copper. At the surface of the copper coin, these electrons reduce the zincate: ZnO2-- + 2H2O + 2e- → Zn + 4OH– This produces the zinc plating you see on the coin. At the surface of the zinc*, the electrons that are being sent to the copper metal are generated by zinc dissolving to produce more zincate: Zn + 4OH– → ZnO2-- + 2H2O + 2e- Here's the cool thing: There is NO NET REACTION, but there is a net motion of zinc! The "zinc*" referred to above can be left-over zinc powder from the first step, or it can be zinc that's already built into the coin. Post-1981 US pennies, which are in fact mostly zinc with a thin copper cladding, work fine without an external zinc supply. It would seem that microscopic flaws in the cladding are necessary to let the zinc core contact the solution -- so perhaps "mint" condition pennies do need an external zinc source. (Science project, anyone?) The reaction seems at first glance to run against the electrochemical potentials of the metals, which perplexes many people. What makes it run, however, is the unseen dissolution of the metallic zinc*, which is particularly invisible in the case of a new US penny. (This is the same reaction that allows "sacrificial anodes" of zinc or magnesium to protect ship hulls against corrosion in salt water.) The experiment is more impressive, actually, with a true copper coin. Clean an old penny (1981 or earlier) by soaking it in hot vinegar until it's shiny, and drop it into the plating solution. Nothing will happen unless the penny is in contact with some zinc metal. Separate the penny from the zinc, and the plating will dissolve -- the penny returns to its original copper color. Touching the penny with a bit of zinc recreates the battery, and the zinc plating re-appears within seconds! Heating the zinc=plated penny, or just letting it sit around for several months, results in copper atoms dissolving into the zinc to produce brass - the "gold" coin is actually a brass-plated coin. This explanation, with more details and some great photos, can be found at http://woelen.scheikunde.net/science/chem/exps/copper+zinc/index.html -Jim Demers (9/4/2008)
Where to find the mint mark on a penny?
Mintmarks for Lincoln cents are below the dates.
How much is a small date 1960 penny from the Denver mint worth?
Circulated 1960 small dates from the Denver mint are worth about $0.25.
If there is no mint on a penny what does it mean?
If a penny has no mint mark, it typically means it was produced by the Philadelphia Mint. Mint marks indicate where a coin was minted, and coins from the Philadelphia Mint, the oldest U.S. Mint facility, do not have a mint mark.
How much is a 2009 penny worth with no mint mark?
a penny
What is the value of a 2002p US mint set - uncirculated with no mint mark on the penny?
2002 mint sets in original package have a value of $15.00 to $20.00. The penny has never had a P mint mark.
How much is a d mint mark on a wheat penny?
The mint mark does not determine the value of a coin. If you have a penny and want to know what it is worth, please submit a new question and include the date on your penny as well as the mint mark.
Where is the mint mark on a 1919 penny?
The mint mark is below the date.
Where was the 1947 Canadian penny minted at?
The 1947 Canadian Penny was minted by the Royal Canadian Mint in Ottawa, Ontario. Today the penny is minted in Winnipeg by the Royal Canadian Mint.
What is a 1898 Indian head penny?
This is a penny made by the US mint in 1898.
Is a 1990 penny with no mint of value and if so how would I know?
It is worth a penny.
What is the d on the penny?
The D on a penny indicates it was made at the Denver, Colorado mint
What is a 1978 no mint cent worth?
A penny unless it is in original mint packaging.
