1 Mole = {6.02 x1023} known as Avogadro's number
= 602 000 000 000 000 000 000 000
.. therefore, 1 mole is just a really big number!
Hydrogen Bomb Equation
2H2 + O2 -> 2H20
is actually..
(2 H2 molecules) and (1 O2 molecule) = (2 molecules of H20)
is also..
12.04 x 103 + 6.02 x 103 --> 12.04 x 1023
is also..
2 mol of H2 + 1 mol of O2 --> 2 mol of water
How big is Avogadro's number?
if 1 mole = 6.02 x 103 was represented in dollars and divided among every person in the world..
about $1.0 x 1014 -> each person would have $100 trillion!!!!
How Gases Combine
- John Dalton looked at the masses of gases such as H2, N2, and C in comparison to O2 but unfortunately, discovered there was no pattern.
- Joseph Gay-Lussac combined gases based on volume.
ex. 1L of H2 reacts with 1L of Cl2 -> 2L of HCl
1L of N2 reacts with 3L of H2 -> 2L of NH3
2L of CO reacts with 1L of O2 -> 2L of CO2
He discovered that gases combine in simple, whole number ratios.
Avogadro's Hypothesis
- he came to believe that equal volumes of any gas at a constant temperature and pressure contain equal numbers of molecules (but have different mass)
ex. [(*) to represent one molecule]
H2 (*)(*)(*)(*)
O2 (*)(*)(*)(*)
And in case you still don't understand the mole, here is a video to help:
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