The Mole - Oct. 19 Class

In the beginning of class, Mr. Doktor showed us this really cool experiment involving this equation: 2 H2 + O2 -> 2 H2O

This is known as the Hydrogen bomb equation.





To count 1 mole, it will take:
6.03 x 10^23 = 1.0 x 10^22 mins
= 1.67 x 10^20 hours
= 6.97 x 10^18 days
= 2.3 x 10^17 months
= 1.94 x 10^16 years

The mole

1 mole = 602 000 000 000 000 000 000 000 = 6.02 x 10^23 -> Avogradro's number

2 H2 + O2 -> 2H20

2 H2 molecules + 1 O2 molecule -> 2 molecules of H2O

12.04 x 10^23 + 6.02 x 10^23 -> 12.04 x 10^23

of H2 molecules molecules of O2 molecules of water

How big is Avogadro's Number?

$1 mol

$6.02 x 10^23

6.0 x 10^9 = population of earth

$ 6.0 x 10^23

__________

6.0 x 10^9 ppl

= $1.0 x 10^14 -> $100 000 000 000 000

How gases combine

John Dalton

-look at masses of gases

11.1g of H2 reacts with 22.9g of O2

46.7g of N2 reacts with 53.3g of O2

42.9g of C reacts with 57.1g of O2

= No pattern

Joseph Gay Lussac

-combine gases based on volume

1L of H2 reacts with 1L of Cl2 -> 2L of HCl H2 + Cl -> 2 HCl

1L of N2 reacts with 3L of H2 -> 2L NH3

2L of CO reacts with 1L of O2 -> 2L CO2

= gases combine in simple whole number ratios

Avogadro's Hypothesis

-Equal volumes of any gas at a constant temperature and pressure contain equal numbers of molecules.

H2

same / but different mass

02

In conclusion, at the end of class, we did another really cool experiment known as the potato gun! It needs oxygen to react with chemicals.