The Energy of an Electron State Has an Uncertainty of 0.500

question 18

Multiple Choice

The energy of an electron state has an uncertainty of 0.500 eV.What is the minimum uncertainty in the lifetime of the level? ( h = 1.055 × 10^-34 J • s = 6.591 × 10^-16 eV • s,

• A) 6.59 × 10^-16 s
• B) 4.14 × 10^-15 s
• C) 6.59 × 10^-12 s
• D) 4.14 × 10^-11 s
• E) 6.59 × 10^-9 s

---

Definitions:

Collecting Duct

A segment of the nephron in the kidney that transports urine from the nephron to the ureters, playing a key role in the regulation of water and sodium.

ADH Production

The synthesis and release of antidiuretic hormone (vasopressin) by the posterior pituitary gland, which helps regulate water balance in the body.

Colloid Osmotic Pressure

The pressure exerted by proteins, mainly albumin, in a blood vessel's plasma that tends to pull water into the circulatory system.

Ascending Limb

Part of the loop of Henle in the kidney nephron that transports filtrate from the renal medulla back towards the cortex, important for the reabsorption of water and salts.