In the chapter section on acid/base properties of salt solut…

In the chapter section on acid/base properties of salt solutions, you learned that protonated forms of weak bases can act as weak acids.  Given that for ammonia, NH3, Kb = 1.8 x 10-5, calculate the pH of a 0.2 M solution of NH4Br. Hint: NH4Br dissociates 100% in water and acts as a weak acid (NH4+). This is therefore a weak acid pH calculation with given Kb instead of Ka. 

A 7-year-old child who has a history of a repaired congenita…

A 7-year-old child who has a history of a repaired congenital heart defect (CHD) has many dental caries along with gingival erythema and irritation and a temperature of 102.5°F.  The child is noted to have a Janeway lesion on his hand. What will the nurse practitioner do next?