1. Ch. 10
The MOLE

2. Named after Amedeo Avagadro. So is also called Avagadro’s number
The Mole
A numerical Value: 6.02 x representative particles. 602,000,000,000,000,000,000,000
Named after Amedeo Avagadro. So is also called Avagadro’s number
What is a representative particle? Anything really, but mostly atoms or molecules (mc).

3. The Mole How big is a mole?
Ok, so let’s say I (being generous [haha]) decide to give you 1 mole of pennies.
But, the condition is, you need to share your mole of pennies with everyone in the whole world (about 7 billion people). Then you must spend, $1 million dollars/day.
So, how long will it take you to spend your portion of the mole of pennies?
(What are some of the possible problems with this scenario?)

4. Answer:
6.02 x 1023 pennies= 8.6 x 1013 pennies/ person 7,000,000,000 persons 8.6 x 1013 pennies x 1dollar x 1 day x 1 year person 100pennies 1,000,000dollars 365 day = approx years/person

5. Other comparisons of a MOLE
one mole of peas is enough to cover Earth and 250 more planets the same size as Earth one metre deep in green peas
a stack of one mole of pennies is tall enough to reach Proxima Centauri (the second closest star to Earth) and back again 7448 times
a mole of marbles spread over the Earth would cover it to a depth of 80 km

6. Measurements
Generally, you measure something 3 different ways:
By count
By mass
By volume

7. So why such a big number?
How much is a mole of:
Zinc?
Copper?
Water?
What does that tell you about the size of an atom/mc?

8. Mole Conversions
The mole allows us to convert between these 3 measurements
1 mole = 6.02 x 1023 particles (mc, atoms, ions)
1 mole = 22.4 L (this is for a gas at STP) (STP is standard temp and pressure)
1 mole = MM g (MM is Molar Mass; g is grams)