Reaction Times (in s) and Identification of Comparison Pairs Record times one place past the decimal. Record times one place past the decimal. A1 A2 A3 A4 A5 A6 A7 Group 1: Time (s) Group 2: Time (s) Group 3: Time (s) Group 4: Time (s) 92.7 108.4 96.6 108.7 51.0 51.6 50.8 52.2 31.9 35.0 32.3 31.8 45.6 51.3 47.1 47.3 33.4 35.4 33.6 34.4 24.7 23.4 25.1 23.0 11.9 10.6 10.5 11.4 Identify reaction rates to compare for the determination of each exponent. Identify reaction rates to compare for the determination of each exponent. First comparison pair for exponent a Second comparison pair for exponent a Third comparison pair for exponent a Numerator (Expt. label) Denominator (Expt. label) A2 A1 A3 A1 A3 A2

Amoxicillin is an antibiotic packaged as a powder. When it is used to treat babies and small animals, the pharmacist or veterinarian must suspend it in water, so that it can be administered orally with a medicine dropper. The label says to dispose of unused suspension after 14 days. It also points out that refrigeration is required. In the context of this chapter, what is implied in the latter two statements?

For the vaporization of one mole of bromine at 59C, determine (a) H (Table 8.2) (b) PV(c) E

The following equation represents a reversible decomposition: CaCO3(s)CaO(s)+CO2(g) Under what conditions will decomposition in a closed container proceed to completion so that no CaCO3 remains?

5.12. True or false: If all the partial pressures of reactants and products drop by half, the value of Q drops by half. Give an example of a chemical reaction to support your answer.

For the endothermic reaction AB(g)A(g)+B(g), the following represents a reaction container at two different temperatures. Which one (I or II) is at the lower temperature?

The recycling of polymers represents only one industrial process that allows creating order in one location by creating greater disorder at some other location, often at a power plant. List three other industrial processes that must create disorder in the surroundings to generate the desired material.

In Chapter 3, we discussed the conversion of biomass into biofuels. One important area of research associated with biofuels is the identification and development of suitable catalysts to increase the rate at which fuels can be produced. Do a web search to find an article describing biofuel catalysts. Then, write one or two sentences describing the reactions being catalyzed, and identify the catalyst as homogeneous or heterogeneous.

The direct reaction of iron(III) oxide. Fe2O3, to give iron and oxygen gas is a nonspontaneous reaction; normally, iron combines with oxygen to give rust (the oxide). Yet we do change iron(III) oxide, as iron ore, into iron metal. How is this possible? Explain.

Old-fashioned smelling salts consist of ammonium carbonate, (NH4)2CO3. The reaction for the decomposition of ammonium carbonate (NH4)2CO3(s)2NH3(g)+CO(g)+H2O(g) is endothermic. Would the smell of ammonia increase or decrease as the temperature is increased?