• EXAM #1 RESULTS • OWL: DEADLINE FOR COMBUSTION ANALYSIS MODULE EXTENDED; FIRST SET OF CHAPTER 4 HOMEWORK POSTED THIS AFTERNOON Announcements
Dec 21, 2015
•EXAM #1 RESULTS
•OWL: DEADLINE FOR COMBUSTION ANALYSIS MODULE EXTENDED; FIRST SET OF CHAPTER 4 HOMEWORK POSTED THIS AFTERNOON
Announcements
Hughie’s question- is applesauce a solid or a liquid?
1 2 3
54%
1%
45%
1. Solid2. Liquid3. Neither- it’s a
gas! Why ask a scientist when you can ask
the lunch lady?
Chemical Analysis
Used to determine Composition of mixtures
Last week’s lab % Sulfur in coal sample
Chemical Formulas
Chemical Analysis
Coal deposits contain sulfur in differing amounts
S + H2 H2S
1.0g of coal was analyzed and 0.0130g H2S was produced. What was the %S in the coal?
%S=grams of S/grams of coal x 100%
Combustion Analysis of Hydrocarbons
3.47g of CxHyFz What are x, y, and z?7.51g CO2 and 3.08g H2O produced
Solution Concentration
Solution Solute Solvent
Concentration Qualitative
Dilute Concentrated
Quantitative Molarity=# moles of solute per 1L of solution