What Mass of Ammonium Nitrate Must Be Added to 350

question 105

Multiple Choice

What mass of ammonium nitrate must be added to 350. mL of a 0.150 M solution of ammonia to give a buffer having a pH of 9.00
(K_b(NH₃) = 1.8 * 10^-5)

• A) 7.6 g
• B) 2.4 g
• C) 5.4 g
• D) 11 g
• E) 3.3 g

---

Definitions:

Systemic Lupus Erythematosus

A chronic autoimmune disease that can cause inflammation and damage in various parts of the body, such as the skin, joints, and organs.

Renal Failure

A medical condition where the kidneys lose the ability to remove waste and balance fluids.

"Butterfly" Rash

A facial rash that has the shape of a butterfly, typically spreading across the nose and cheeks, often associated with lupus erythematosus.

Thymus

A gland located in the upper chest area that plays a crucial role in the development of the immune system in early life.