Lesson on 22/1/2010

3. I learnt about Eudiometry. It's new to me. I find it useful that the general equation can be derived.
2. The lesson reinforced that actual yield < theoretical yield. I also learnt the term stoichiometric amount, which is the exact amount of a substance  required/produced in a chemical reaction, as calculated by the mole ratio.
1. I understood that mole ratio=volume ratio. Hence, when the volumes of two required compounds are not available, we can use their amounts of substance.

2. I'm still unsure what are the chemicals that can be reacted by CO2 and excess O2 to remove CO2 in Eudiometry.
1. I still do not know what the two contractions represent. (example 24)