When 200 Grams of an Unknown Compound Are Dissolved in 500

question 42

Multiple Choice

When 20.0 grams of an unknown compound are dissolved in 500. grams of benzene, the freezing point of the resulting solution is 3.77 ^$\circ$ C. The freezing point of pure benzene is 5.444 ^$\circ$ C, and the K_f for benzene is 5.12 ^$\circ$ C/m. What is the molar mass of the unknown compound

• A) 110 g/mol
• B) 120 g/mol
• C) 130 g/mol
• D) 140 g/mol
• E) None of the above

---

Definitions:

Dysuria

The medical term for painful urination, which can be a symptom of various urinary tract conditions or infections.

Glomerular Filtration Rate

A test used to check how well the kidneys are filtering blood.

Creatinine Clearance

A measure of the kidney's ability to clear creatinine from the blood, an indicator of renal function.

BUN

Blood Urea Nitrogen; a test measuring the amount of nitrogen in the blood that comes from the waste product urea, used to assess kidney function.