I am having diffuclty writing the chemical formulas can any body help. I can not seem to be able to wirte down the equation from words to symbols. Please help


Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

Question: What is the

Question: What is the percent yield if 36.5 grams of propane reacts as 6.5 grams of oxygen to form 3.5 grams of carbon dioxide?

Give a specific example of one or two you are trying to do, and somebody will be able to walk you through it.


I have dificulty in interprating the following. For example hydrofluoric acid, absorbic acid etc.

They are two good examples.

The first, Hydrofluric acid, is easy, because you know it has a Hydrogen in it (Hydro-) and you know it has a Flurine in it (-fluric), so you can safely say it is HF, given H has 1 electron to spare and F needs one.

As for Ascorbic acid, that is what is known as a 'trivial name', meaning the name goves no (direct) indication of the forumla of the chemical. It is something you 'just know'.
I am bad with trivial names often, so I had to google that one. It is this lovely thing:

WebElements: the periodic table on the WWW []

Copyright 1993-20010 Mark Winter [The University of Sheffield and WebElements Ltd, UK]. All rights reserved.