A penny is a cent
100 cent = 1 dollar
100 - 1 = 99
vinegar is acetic acid so it 'eats' away the coating of the penny cleaning it.
Rubbing alcohol cleans pennies because it breaks down dirt, oils, and other residues on the surface of the penny. The alcohol acts as a solvent, dissolving these substances and allowing them to be wiped away, revealing the shiny surface underneath.
Imagine placing a penny on a table in front of you and another penny an arm's length away. There are two pennies in total and one of them is close to you. One out of two pennies (half the pennies) is written 1/2 Do the same thing with two more pennies. Now there are four pennies and two of them are close to you. Two out of four is written 2/4 But it's still half of the total number of pennies. As long as the ratio between the numerator and denominator is the same, in this case the numerator is half the denominator, the values are equivalent. 1/2 = 2/4
There are 100 pennies in every dollar so 600 dollars would be 600x100, or 60,000 pennies.
No, the reliance on the penny is deeper rooted then sentimental value. Everyday stocks are traded worldwide and changes in penny values can mean thousands or even millions of dollars in profit or loss. The penny mark cannot be done away with. It never will. They may change the penny to steel but .01 is an important number economically.
If the pennies are brand new (like grandpa got them from a bank and socked them away) you can get several dollars for them depending on date and mintmark. If they are just pennies taken from circulation they typically run at most 2 cents each. One big exception is the 1931 S . Even worn it could be worth over $50. You might also get a dollar or so for a worn 1931 D and 1933 D .
The acids in the lemon juice eat away at the rust on the penny
take away 2 dimes and add a penny
When vinegar and salt are combined to clean pennies, a chemical reaction occurs that removes the tarnish on the coins. The acidic vinegar breaks down the tarnish while the salt acts as a mild abrasive to help scrub away the debris. This process can restore the shine and luster of the pennies.
You find pennies everywhere because people do not like to keep them and they just throw them away.
Well, I did a science experiment on that and in 5 days it should look like it dissolved. It really hasn't though the acid in the lemon juice gradually eats the pennies metal away everyday for the 5 days that it is in the lemon juice.
lots