Fun Calculations

Practicing the skills of writing chemical formula and calculating relative molecular masses, molar masses and percentage compositions can be a bit, .. well, ... a bit ..... boring (sh, don't tell anyone I said that). But, you can use chemspider to find some interesting molecules for your students to practice their skills on.
ChemSpider is a free chemical structure database run by the Royal Society of Chemistry. It provides access to over 25 million chemical structures, properties and associated information.

Activity:
For each of the molecules below:

1. Use chemspider to find the structural formula.
2. Write the molecular formula..
3. Calculate the relative molecular mass..
4. Calculate the molar mass..
5. Calculate the percentage of carbon present..

Molecules with "interesting names" to practice on:

• olympicene
• ovalene
• performic acid
• traumatic acid
• arabitol
• putrescine
• cadaverine
• nonose 
• syringic acid
• warfarin
• orotic acid
• megaphone
•  moronic acid
• inflatene
• sexithiophene
• arsole
• anol

Further Reading
Calculating Relative Molecular Mass
Molar Mass
Percentage Composition