How To Read Literature Like a Professor

Shelby McLenithan Honors Chemistry 12/1/10 STOICIOMETRY LAB gesture= which compound hold back out stir the nearly carbonic acid gas by heating of the followers: * calcium carbonate * Sodium bicarbonate * Copper (II) carbonate. guesswork= Calcium carbonate will produce the approximately carbonic acid gas by heating Stoichiometry: Variables: low-level= tot of carbonic acid gas mugwump= the reactants control= amount of reaction, same amount of heating ( 5 minutes) Procedure: 1. Measure out 1 gram of CO2 2. Heat CaCO3 for 5 minutes using th bunsen burner 3. think mass of CaCO3 after 5 minutes 4. make up ones mind the difference in mass between CaCO3 and CO2 5. holiday resort 1-4 for NaHCO3 6. Repeat 1-4 for CuCO3 Results: | 1st run| 2nd trial| tertiary trial | CuCO3| 17.85| 17.8| 17.84| CO2 emission| .25g| .3g| .26g| NaHCO3| 17.35| 17.5| 17.65| CO2 emission| .6g| .75g| 4.5| CaCO3| 18.1| 18.05 | No results| CO2 emission| 0| .5g| No results| Percent begets: composite| authentic| Theoretical| Percent| CaCO3| .25| .44| 57%| CuCO3| .27| .35| 77%| NaCO3| .6| .31| 198%| zConclusion: My theory was non correct according to my results.

I had based my assumption wrap up of the theoretical yield data we put in after doing a few stoichiometry equations. The actual riddles we performed proved that NaHCO3 produced the most CO2 by heating and CaCO3 produced the least. Percent yield is a measure of how oftentimes of a product you actually obtained in a reaction compared to the amount that you could have obtained according to calculations. Si! nce our pct yield for NaCO3 is so high, some parts of our experiment may have bygone wrong. An fault we could have made was assumptive all the test tubes thinked the same, and next time we should properly weigh them. Another error we could have made could be not measuring the compounds right on or not memory the heating time constant. I learned what percent yield was, and how to find theorectical yield...If you want to get a full essay, hostel it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay