What is the volume of a penny after 1982?
Place all your pennies dated prior to 1982 into the water. Determine the amount of water displaced by the pennies. (Final volume: 10mL) This will be the volume of the pennies. Record in the data table….
| Metals and Their Densities | |
|---|---|
| Metal | Density (g/cm3) |
| Zinc | 7.13 |
| Iron | 7.87 |
| Cooper | 8.96 |
What is the volume of a penny?
0.349 cm3
A new penny has a mass of 2.49 grams and a volume of 0.349 cm3. Given that the density of copper is 8.86 g/cm3, determine if the penny made of pure copper.
What is the volume of an old penny?
A copper penny has a mass of 3.1 g and a volume of . 35 cm^3.
What are the masses of a pre-1982 penny and a post 1982 penny?
In case you are wondering, the number of pre-1982 pennies has a mass of 3.1 grams. (However, pennies made after 1982 is about 2.5 grams).
What are post 1982 pennies made of?
The composition of pennies changed in late 1982, when zinc became the primary metal instead of copper. Before 1982, pennies were forged of 95 percent copper and 5 percent zinc. However, as copper became more expensive, it was abandoned as the primary metal. Pennies are now made of a zinc core and a thin copper coating.
Are pre or post 1982 pennies denser?
A post-1982 penny has a mass of 2.5 grams, while the pre- 1982 pennies have a mass of 3.1 grams. 1982 pennies may have either mass. Since all pen- nies have an identical volume, a greater mass indicates a greater density. Copper is denser than zinc.
What is the volume of a penny in MM?
We used one and obtained a value of 1.27 mm (or . 05 inches) for the thickness. VOLUME = 360 cubic millimeters = . 360 cubic centimeters.
What is the density of a penny?
We will determine the density twice; once for pennies from 1982 or later and once for pennies from prior to 1982. In 1982 the composition of pennies was changed because they contained more than 1 cent’s worth of copper….Discussion questions.
| Element | Copper |
|---|---|
| Atomic Symbol | Cu |
| Density (g/mL) | 8.96 |
| Melting Point | 1083ºC |
How much is a 1982 copper penny worth?
1909-1982 pennies worth more
| Description | Denomination | Metal Value |
|---|---|---|
| 1909-1982 Cent (95% copper) * | $0.01 | $0.0249058 |
| 1946-2012 Nickel | $0.05 | $0.0560829 |
| 1982-2012 Cent (97.5% zinc) * | $0.01 | $0.0054878 |
| 1965-2012 Dime | $0.10 | $0.0210613 |
What is the density of post 1983 penny?
7.05 g/cm3
The accepted value for the density of post-1983 pennies is 7.05 g/cm3.
Why do pre 1982 and post-1982 pennies have different masses?
Since 1982, U.S. pennies have been produced with 97.6% zinc with a thin plating of copper. Since each metal has a different density, pre- and post-1982 pennies have different masses. A mixture of pre- and post-1982 pennies will represent the naturally occurring mixture of two isotopes of an imaginary element.
Why do doctors worry about children who may swallow a post-1982 penny?
Button batteries can burn a hole in the lining of the stomach within hours. And pennies issued after 1982 contain corrosive zinc that can damage the esophagus. If your child has swallowed either of these, take them to the ER immediately.