Rufus the naked mole rat??? NO! We're learning about the OTHER mole....
THE MOLE
The mole is a quantity of a substance that has a mass in grams numberically equal to its formula mass (6.02 x 10 to the 23rd power). It is just another way to represent a number.
Example: triplets = 3, a dozen = 12, a mole = 6.02 x 10 to the 23rd power.
The number 6.02 x 10 to the 23rd power is also known as AVOGADRO'S NUMBER.
How big is Avogadro's Number?
Imagine a small green pea, it covers one cubic centimeter. 1 mole would cover the entire earth plus the pathway to jupiter!!
How Gases Combine
John Dalton look at the masses of gas
11.1 g of H(2) reacts with 88.9 g of O(2)
46.7 g of N(2) reacts with 53.3 g of O(2)
42.9 g of C reacts with 57.1 g of O(2)
In this observation there are no patterns
Joseph Gay-Lussac
1L of H(2) reacts with 1L of Cl(2) to create HCL
1L of N(2) reacts with 3L of H(2) to create NH(3)
2L of CO reacts with 1L of O(2) to create 2L of CO(2)
In this observation there is a pattern. Reactions occur in simple ratios
Avogadro's Hypothesis
Equal volumes of any gas at the same temperature and pressure contain equal numbers of molecules.
As for the fun parts of class we blew up more balloons. One filled with Hydrogen and the other with Hydrogen and oxygen. The balloon filled with both hydrogen and oxygen should have blown up louder than the balloon with hydrogen but a hole was burnt into the balloon. Mr. doktor brought his potato gun and the result was a big bang and the wet tissue being blasted at the wall on the floor.
This is what the potato gun looked like.
Very nice :D Looking at the ratios in the balanced chemical equations and the ratios that volumes of gases combine in, you should notice that they are the same! 2 L of Hydrogen + 1 L of Oxygen = 2 L of Water. OR 2 moles of Hydrogen + 1 mole of Oxygen = 2 moles of water. This should say that there are the same number of moles of each gas in the same volume. 1 L of oxygen has the same number of moles as 1 L of hydrogen ect.
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