Ethylene Dichloride Is an Effective Cooling Agent When Allowed to Evaporate

question 2

Multiple Choice

Ethylene dichloride is an effective cooling agent when allowed to evaporate. The heat of vaporization is 85.3 cal/g. How much heat could be removed from the skin if 4.25g of ethylene dichloride were sprayed on and allowed to evaporate?

• A) cal
• B) cal
• C) cal

---

Definitions:

Density

Density refers to the mass of a substance per unit volume, a fundamental property affecting the buoyancy and stability of objects in fluids.

Basalt

A dark, fine-grained volcanic rock that is formed from the rapid cooling of basaltic lava exposed at or very near the surface.

Tan Silt

Fine-grained sedimentary material with a distinctive tan color, composed of quartz and feldspar, often transported by water or wind.

Sediment

Particles of organic or inorganic matter that accumulate in a loose, unconsolidated form, often transported by water, wind, or ice.