How Many Moles of Ethylene Glycol Must Be Dissolved in 500

question 62

Multiple Choice

How many moles of ethylene glycol must be dissolved in 500 g of water (K_f = 1.86 °C m^-1) to lower the freezing point to -5.00 °C?

• A)18.6 mol
• B)2.69 mol
• C)0.268 mol
• D)3.73 mol
• E)1.34 mol

---

Definitions:

Crepitus

A crackling or grating sound or sensation produced by friction between bone and cartilage or the fractured parts of a bone.

Decreased Breath Sounds

A condition where the intensity of breathing sounds is less than expected upon auscultation, often indicative of respiratory issues.

Whispered Pectoriloquy

A test in which whispered phrases are more clearly and distinctly heard through the chest wall with a stethoscope, indicative of lung consolidation.

Adventitious Sounds

Unusual sounds heard during respiration, such as crackles, wheezes, or stridor, which are indicative of respiratory conditions.