What Is the Vapor Pressure at 20°C of an Ideal

question 70

Multiple Choice

What is the vapor pressure at 20°C of an ideal solution prepared by the addition of 4.50 g of the nonvolatile solute urea,CO(NH₂) ₂,to 22.7 g of methanol,CH₃OH? The vapor pressure of pure methanol at 20°C is 89.0 mmHg.

• A) 8.51 mmHg
• B) 64.9 mmHg
• C) 74.3 mmHg
• D) 80.5 mmHg
• E) 24.1 mmHg

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Definitions:

Acid Deposition

The falling of acids and acid-forming compounds from the atmosphere to the Earth's surface, often as rain, snow, or dust, with harmful environmental effects.

Methylmercury

A highly toxic form of mercury that bioaccumulates in fish and shellfish, posing health risks to humans and wildlife.

Nutrient Uptake

The process by which organisms absorb nutrients from the environment to support their growth and metabolism.

Acid Deposition

The falling of acids and acidifying agents from the atmosphere to the Earth's surface, typically as rain, snow, or dust.