Your Questions About Mole Of Pennies

admin answers:

A penny is 19 mm wide.
There are 6.022×10²³ items in a mole, so 1 mole of pennies placed edge-to-edge would be 1.144×10^25 mm long.
Earth’s equatorial circumference is 40,075.16 km. There are 1,000,000 mm in 1 km, so the circumference is 4.007516×10^10 mm.
Divide the length of the pennies by the circumference of Earth, giving
2.855×10^14 times.

admin answers:

Firstly, thank you for introducing me to the concept of “a mole of pennies”. I’d never heard that before !

Here’s something I found that should help (the link to the full webpage is below):

How many carbon-12 atoms are needed to have a mass of exactly 12 g. That number is NA – Avogadro’s number. Thus, NA is defined by

NA x (mass of carbon-12 atom) = 12 g

Careful measurements yield a value for NA = 6.0221367×10^+23. This is an incredibly large number – almost a trillion trillion. For example, if we stack NA pennies on top of one another how tall would the stack be? The answer is it would be so tall that the stack of pennies could reach the sun and back almost 500 million times!

A convenient name is given when there is an Avogadro’s number of objects – it is called a “mole”. Thus in the above example there was a mole of pennies.

admin answers:

(6.02 x10^23 pennies)*(0.1 cm / penny)*(1 m/100 cm)*(1 km/1000 m) * (1 trip / 1.5×10^8) =

6.02×10^23 * (10^-1) * (10^-2) * (10^-3) *[(1 /1.5)(10^-8)] trips=

(6.02/1.5) * 10^(23-14) =
(6.02/1.5) * 10^(9) =
(602/150) * 10^(9) =
(301/75) * 10^(9) = 4,013,333,333 1/3 trips = just over two billion round trips

admin answers:

**** Crickets sound ********

admin answers:

K penys are are 98% Zinc with the remaining 2% being Electrolitically plated Copper

so about the molar mass of zinc 65.4 grams per mole

so 1 mole of pennies weighes 65.4 grams

a penny is about 2.5 grams

65.4 grams / 2.5 grams = 26 pennies per mole

admin answers:

How can there be only 10 pennies in the stack if it says a mole of pennies? A mole is 602200000000000000000000. A penny is about 1.55 mm thick. The total thickness of the stack would be 933,410,000,000,000,000,000,000 mm, or 933410000000000000 km. The distance to the sun is about 37000000 km. Hence, the pennies would reach there and back (assuming there and back is one) 25,227,297,297,297,295 times

admin answers:

6.02e23 pennies / 100 pennies = 6.02e21 dollars / 1500 students = 4.013e18 dollars per student / 100000 dollars per minute = 4.013e13 minutes

4.013e13 min / 60 minutes = 6.68e11 hours / 24 hours = 2.787e10 days / 365 days= 76,357,179.1 years

“e” means “x10″ so 6.02e23 = 6.02×10^23

If you want it in dimensional analysis form, I can’t help you, I can’t do that format in the answer box.

admin answers:

Change cubic centimeter measure to milliliters (mL) with the equality 1mL = 1cm3

Calculate volume of 1 mole of pennies by multiplying using equality 6.022 x10exp23 pennies = 1 mole pennies

Divide volume of mole of pennies by volume of earth for your answer