Calculate the pOH of 0.2 M HC2H3O2 aqueous solution at 25 ºC. Ka of HC2H3O2 = 1.8 X 10-5 at 25 ºC

A 16 year-old patient with epilepsy inquires about obtaining her driver’s license.  The seizure-free interval required for obtaining a driver’s license is determined by which of the following?

True or false: Sieving in the laboratory is an effective method for separating sand-sized particles from silt-sized particles. 

Which form of urinary incontinence is most common in elderly persons?

What is the Kb of a weak base if a 0.250 M solution has a pH of 11.59?

In children and the elderly, which of the following conditions can contribute to bladder instability and increase the risk of an UTI?

Imagine a soil sample was collected in a ring that had a total volume of 300 cm3. If the soil had a bulk density of 1.3 g/cm3, which of the following would best estimate the amount of water in the soil when it is completely saturated (all pores filled with water)? 

What process is represented by the following equation? 

Dr. Tara Bishop showed the use of a system she uses in the field for her study of the nitrogen cycle in the desert. The system funnels water through an ion exchange column that is later collected and analyzed in the laboratory. Which aspect of the nitrogen cycle is this used to evaluate?

Give two management guidelines that would be useful for conservation of stable soil aggregates.