For each reaction, calculate how many moles of the product form when 0.112 mol of the reactant in color completely reacts. Assume there is more than enough of the other reactant. (a) (b) (c) (d) 4 Al(s) + 3 O2(g) 2 Al2O3(s) 4 K(s) + O2(g) 2 K2O(s) 4 Fe(s) + 3 O2(g) 2 Fe2O3(s) 2 Ca(s) + O2(g) 2 CaO(s)
Basics Scientific method Experiment: what a scientist does to understand nature Data: results of experiments Law: a generalization based on observed patterns in data Hypothesis: educated guess trying to explain data behavior Theory: unifying prediction explaining experimental observations and the laws based on them Metric system (SI) Based on powers of 10 3 -2 -3 o Kilo- 1000/ 10 , centi- 1/100/ .01/10 , milli- 1/1000/ 10 * o Mass- gram(g), kilogram (kg) {=2.2 lbs} o Volume- Liter (L), milliliter (mL) or cubic meter (m ), cubic cm (cm ) o Temperature °F °C K Water BP 100 212 373 W
