What Is the Diameter of a Capillary Tube Holding Methanol

question 2

Multiple Choice

What is the diameter of a capillary tube holding methanol, if the methanol rises to the same height as water in a 1 mm diameter tube? (Take 0° for contact angles, surface tension for water ó_H2O= 0.073 N/m, and of methanol ó_methanol = 0.023 N/m. Density of water is ñ_H2O = 1000 kg/m³, and of methanol ñ_methanol = 792 kg/m³.)

• A)0.2 mm
• B)0.4 mm
• C)2.0 mm
• D)4.0 mm

---

Definitions:

Electricity Generation

The process of producing electric power from sources of primary energy, such as coal, nuclear, wind, or solar.

Economic Challenges

Issues or difficulties related to the economic system of a country or the global economy that affect financial stability, growth, and prosperity.

Rich-Country Standards

The benchmarks or norms established by wealthy countries for quality of life, economic performance, and governance.

Optimal Resource Allocation

The most efficient distribution of resources in an economy, achieving the best possible balance of production and distribution to meet the needs and wants of the population.