Last Class, Mr. Doktor introduced Moles to us. These moles are different from the moles found on our faces. This mole that we are referring to corresponds to a certain value of number. (Such as a dozen of eggs is equal to 12 eggs.)
A Mole is the number of atoms of that element equal to the number of atoms in exactly 12.0g of Carbon-12. 1 Mole is equal to 6.02 x 10^23 (A mole is also known as Avogadro's Number).
If we were to imagine how big a mole is, we can say that if 1 mole is a green pea- then, whole of Earth would be covered with green peas. That's how big a mole is.
Also, we discussed about how gases combine. Such that John Dalton thought that atoms were round spherical shaped- he also looked at the masses of gases, Unfortunately he found no pattern.
While Joseph Gay-Lussac realized that reactions occur in simple ratios. Like, 1L of Hydrogen Gas reacts with 1L of Chlorine that results to 2L of Hydrogen Chloride.
And lastly, one of Avogrado's Hypothesis is that; "Equal volumes of any gas at the same Temperature & Pressure contain equal numbers of molecules."
It is very important to know what a mole is in chemistry since we will be dealing with very large numbers and so, a mole will make everything as simple as possible. And besides, it's very easy to remember how much a mole is worth. (6.02 x 10^23)
A Mole is the number of atoms of that element equal to the number of atoms in exactly 12.0g of Carbon-12. 1 Mole is equal to 6.02 x 10^23 (A mole is also known as Avogadro's Number).
If we were to imagine how big a mole is, we can say that if 1 mole is a green pea- then, whole of Earth would be covered with green peas. That's how big a mole is.
Also, we discussed about how gases combine. Such that John Dalton thought that atoms were round spherical shaped- he also looked at the masses of gases, Unfortunately he found no pattern.
While Joseph Gay-Lussac realized that reactions occur in simple ratios. Like, 1L of Hydrogen Gas reacts with 1L of Chlorine that results to 2L of Hydrogen Chloride.
And lastly, one of Avogrado's Hypothesis is that; "Equal volumes of any gas at the same Temperature & Pressure contain equal numbers of molecules."
It is very important to know what a mole is in chemistry since we will be dealing with very large numbers and so, a mole will make everything as simple as possible. And besides, it's very easy to remember how much a mole is worth. (6.02 x 10^23)
Here is a video that can help you understand the mole better: