Lab Manual Update

On Monday, I weighed the copper oxide compound after leaving it in the fume hood over the weekend.  There was hardly any change in the mass from previous weighings.

I placed it in the oven and dried three times.  I was able to get the wieght down so that the ratio is now 1.4-1 mole of O to mole of Cu.  Close enough for this trial.  For the actual experiment, I will recommend 30 minutes at 80 C and then 15 minutes at 80 C, until mass is constant.

Gary helped me look for the actual bottles of hydroxylamine hydrochloride and phenanthroline.  It looks there are enough to make 1% solutions.  I also bought from Rite Aid two kinds of iron supplements: sulfate and fumarate.

I wrote a combination of 9.1 and 9.2 AB today and sent that off to Rob for review.