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Articles & Books From Richard H. Langley
Practice your way to a better grade in your Chemistry class Chemistry: 1001 Practice Problems For Dummies gives you 1,001 opportunities to practice solving problems on all the topics covered in your chemistry class—in the book and online! Get extra practice with tricky subjects, solidify what you’ve already learned, and get in-depth walk-throughs for every problem with this useful book.
It’s alive! It’s alive! (Thanks to biochemistry, that is.) Biochemistry is the science of the chemical processes that allow for…well…life. If it moves, breathes, eats, or sleeps, biochemistry can probably explain how. So, it stands to reason that the fundamentals of biochemistry can get a little complicated.
Cheat Sheet / Updated 01-09-2023
Organic Chemistry II is one of the toughest courses you can take. Surviving isn’t easy — you probably know that from your Organic Chemistry I class. Preparation is key: If you study the basics of organic chemistry the right way, prepare for your tests, and know your aromatic systems, you’re off to a great start!
Cheat Sheet / Updated 02-23-2022
Studying amino acids (the building blocks of proteins, which humans need to grow and develop) is essential in biochemistry. The four subgroups of amino acids are nonpolar, polar and uncharged, acidic, and basic. This Cheat Sheet provides a handy, quick reference to these four subgroups.Biochemistry's basic amino acidsAmino acids are important to the study of biochemistry because they’re the building blocks of proteins found in all cells.
Cheat Sheet / Updated 02-17-2022
Solving chemistry problems is a great way to master the various laws and calculations you encounter in a typical chemistry class. This Cheat Sheet provides some basic formulas, techniques, and tips you can refer to regularly to make solving chemistry problems a breeze (well, maybe not a breeze, but definitely easier).
Article / Updated 05-03-2023
The hyperbolic functions are certain combinations of the exponential functions ex and e–x. These functions occur often enough in differential equations and engineering that they’re typically introduced in a Calculus course. Some of the real-life applications of these functions relate to the study of electric transmission and suspension cables.
Article / Updated 03-26-2016
In an Organic Chemistry II class you often add groups to aromatic systems. If you’re wondering where the substitution will take place, check out this table for some guidelines. When using this table, remember two things:
O-p-directors always beat m-directors.
Strong activators always beat weak activators.
Article / Updated 03-26-2016
Organic Chemistry II doesn’t have to be as difficult as you think. Follow these study tips to improve your understanding of organic chemistry, from carbon atom bonds to unnamed reactions, and everything in between:
Don’t simply memorize concepts, learn the concepts by working exercises.
Keep up with the material by studying Organic Chemistry II a minimum of six days a week.
Article / Updated 03-26-2016
Taking an Organic Chemistry II test has a completely deserved reputation for being tough. Make life easier by following these tips before you take your next organic chemistry exam:
Remember that the carbon atom forms four bonds.
Don’t cram the night (or even a week) before a test.
Attend class religiously.
Article / Updated 03-26-2016
Amino acids are important to the study of biochemistry because they're the building blocks of proteins found in all cells. The basic group of amino acids is represented here: