In the previous tutorial, we examined how to calculate the mass, amount and volume of a gas at standard temperature and pressure (STP). In this tutorial, we are going to calculate the same variables for gases in isolation and as part of a reaction – but at room temperature and pressure (RTP). … More Gas Stoichiometry: RTP
When it comes to working out the mass, amount or volume of a gaseous substance in isolation or in a reaction, you have to consider the properties of temperature and pressure.
The first part of this tutorial on gas stoichiometry will focus on calculating the volume (in dm3 or litres), amount in moles and mass in grams of gaseous substances in isolation or within a reaction at standard temperature and pressure (STP). … More Gas Stoichiometry: STP
In this tutorial, we are going to go through how to calculate the percentage yield and the atom economy of a reaction. … More Percentage Yield and Atom Economy
When I studied chemistry in college I used to go home and talk to my grandfather (who’s an engineer) about what I had learned that day. However, when it came to the mole, I found myself pausing mid- sentence to mentally check to see if every detail was correct; this was because it seemed like whenever I thought I remembered everything about this deceptively tricky topic – there was a minute detail that could prove costly if omitted or misunderstood in an exam.
So, in this post I’m going to be running through what the mole is; why we use it as a measurement; how to calculate the amount of a substance in moles and how it relates to mass – plus the number known as Avogadro’s number. … More Moles, Mass and Avogadro’s Constant
Science and Joe 