In this post, we will discuss one of the gas laws using an illustration with a pump filled with some gas and a freely moving plunger and by changing the gas parameters determine their correlation. Boyle’s Law Boyle’s Law … Read more
In the previous two posts, we discussed converting grams to moles and grams to molecules. For the moles, here is what we do: first look up the molar mass in the periodic table, set up the correct conversion factor, and … Read more
In the previous post, we discussed converting grams to moles. Remember, the first thing was to look up the molar mass in the periodic table, set up the correct conversion factor, and finally do the multiplication. Here is a short … Read more
To convert the grams to moles, we need to know the molar mass of the substance. Remember, molar mass (M) is the mass of one mole of atoms/molecules/ions expressed in g/mol. To calculate it we are always going to need a … Read more
The mass of one mole of atoms/molecules/ions is called its molar mass (M) expressed in g/mol. To calculate the molar mass of an atom or a molecule, we are always going to need a periodic table. So, how do we … Read more
In the previous post, when discussing the formal charges, we mentioned it is possible to “shift” the negative charge on one of the oxygen atoms to another and obtain a new resonance structure: What we want to remember … Read more
In the previous post, we talked about the covalent bond and mentioned that sometimes, depending on the number of bonds, the given atom might have either a positive or a negative charge. For example, the oxygen in water has no … Read more
We mentioned in the previous post that covalent bonds are formed by sharing a pair of valence electrons between two atoms. The covalent bond can be represented with Lewis structures where the covalent bond is shown either by two dots … Read more
In the previous post, when discussing covalent bonds, we mentioned that the bonding electrons are shared between the atoms. From this statement, and the Lewis structures, which are simplified but a very useful tool in representing molecules, one may understand … Read more
In the previous post, we saw that the ionic bond is an electrostatic interaction between ions that are formed when one electron(s) is transferred from one atom to the other. The reason for this electron transfer is the … Read more
