Professor Dave Explains
Elemental Analysis: Empirical and Molecular Formulas
There's a thing with carbon and hydrogen in it. But how many of each?! That's the kind of thing a chemist should know. So let's do some elemental analysis!
Professor Dave Explains
IIT/JEE Chemistry Practice #19: Molecular Properties
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
Practice Problem: Assigning Molecular Structure From an NMR Spectrum
For this one we need to be able to interpret NMR data in order to arrive at the correct molecular structure based on an empirical formula. It's not as hard as it sounds!
Professor Dave Explains
IIT/JEE Chemistry Practice #8: Molecular Formulas
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
Practice Problem: Naming Ionic Compounds
We know about ionic bonds and ionic compounds, how do we name them? Let's practice going from formula to name, and also from name to formula.
Professor Dave Explains
Practice Problem: Empirical and Molecular Formulas
How do we know how many atoms of each element are in a particular compound? Through clever experiments! Here let's practice using percent mass information to get the empirical and molecular formulas of a particular compound.
Curated Video
Empirical Formula: Simplest Whole Number Ratio of Atoms in a Substance
The video explains the concept of empirical formula in chemistry. The video also talks about how to convert the molecular formula into the empirical formula and vice versa. The video presents examples of how to determine the empirical...
FuseSchool
Making Alcohols By Fermentation & From Ethane
Learn the basics about making alcohols by fermentation and from ethene, as part of organic chemistry.
FuseSchool
Empirical Formulae From Percentage Composition
Learn the basics about Empirical formulae from percentage composition. What is an empirical formulae? How do you calculate a percentage composition? Find out more in this video!
FuseSchool
Alkanes and alkenes
Learn the basics about Alkanes and Alkenes, what are their properties, similarities and differences? Found out more in this video!
Curated Video
Introduction to Alkanes: Homologous Series and Naming
This video explains the basics of alkanes, a family of organic compounds found in crude oil. The video highlights the common features of alkanes, including the presence of single covalent bonds and the maximum amount of hydrogen in an...
Professor Dave Explains
Stereochemistry: Enantiomers
Defining stereochemistry and enantiomeric relationships.
FuseSchool
Alkanes & Alkenes
Learn the basics of alkanes and alkenes. After watching the covalent bonds video you should have sufficient knowledge to understand about how alkanes and alkenes are formed and the differences between them.
Curated Video
Covalent Bonding: Sharing Electrons to Form Stable Molecules
This video discusses covalent bonding in chemistry. The presenter starts by explaining that atoms or elements want to have a full outer shell of electrons for stability. They then use examples of how non-metals like fluorine and oxygen...
FuseSchool
What Are Structural Isomers?
Different forms of the same molecule are known as structural isomers; they have the same molecular formula but are different 'shapes'. In this video we will look at some different structures of butane - so they all have 4 carbons but...
Khan Academy
Worked Example: Determining an Empirical Formula from Combustion Data
Sal builds on the previous video, which shows students how to calculate the mass composition of a compound from its empirical formula. This problem uses the elements Hydrogen, Oxygen, and Sulfur. The process requires a lot of conversions...
Curated OER
Formula from Mass Composition
Students of chemistry are shown how to calculate the empirical formula from a molecule's mass composition. Sal uses a variety of elements from the Periodic Table to demonstrate the process and the calculations involved to arrive at the...
Tyler DeWitt, PhD
Tyler De Witt: Calculating Molecular Formula From Empirical Formula
This video helps viewers learn how to calculate molecular formula for a compound when you are given its empirical formula and its molar mass.ca [9:08]
Tyler DeWitt, PhD
Tyler De Witt: Writing Empirical Formula Practice
In this video you will practice writing empirical formulas for many molecular formulas. In order to write the empirical formula, you find the largest number you can divide all of the subscripts by, to reduce it as much as possible. You...
Tyler DeWitt, PhD
Tyler De Witt: Empirical Formula and Molecular Formula Introduction
In this video viewers will learn about what empirical formula and molecular formula are and how they are different. The video also teaches about writing the empirical formula for a compound when given the molecular formula. Molecular...
Khan Academy
Khan Academy: Chemistry: Molecular and Empirical Formulas
A video lecture explaining how to find the molecular and empirical formula knowing the percent composition of each element. The problem is solved in easy to follow steps. [9:30]
Khan Academy
Khan Academy: Organic Chemistry: Spectroscopy: Proton Nmr: Hydrogen Deficiency Index
How to relate molecular structure with the molecular formula using the hydrogen deficiency index (or number of degrees of unsaturation). [8:50]