Billy, the neurotic fitness buff, weighed 90 kg. He rapidly drank 10 L of distil

Question

Billy, the neurotic fitness buff, weighed 90 kg. He rapidly drank 10 L of distilled water and developed water intoxication. Water intoxication manifests itself by cerebral edema (brain swelling). If his initial osmolarity was 300 mOsm/L and his brain weighed 1.3 kg and was 60% water, by how much volume did his brain increase after drinking the water? A. 145 ml B. 182 ml C. 490 ml D. 680 ml E 920 ml . While having a romantic Valentine Day dinner, your date empties 15 packets of sugar (sucrose) in his/her 500 ml glass of tea. The glass is now filled to the brim. Assume: (1) that tea leaves do not dissolve (i.e. tea leaves do not contribute to the osmolarity of the tea), (2) that the molecular weight of sucrose i 34 8 (3) sucrose does not dissociate in solution, (4) the sugar in a packet weighs5 grams and (5) you like this person and want to impress them. Given that distilled water freezes at O°Cand a solution containing 1 osm/L freezes at -1.86°C at what temperature would your date's iced tea freeze after he/she added the 15 packets of sucrose 2 A. B. C. D. 0.815°C E. -0.326°C 0.651°C 0.791°C -1.720°C

Explanation / Answer

Amount of water initial in the brain = 1.3 kg*0.6 = 0.78 Kg of water

Density of water = 1 Kg/L

Water volume = 0.78 L water

Water distrubuted after drinking 10 L (Assume equally distubuted) for 90 Kg body

=10/90 = 0.111 L/Kg

for 1.3 Kg of brain is 0.144 L

Water Volume = 0.144+0.78 = 0.924 L

Approximately 920 ml

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.