A Gas Mixture Consists of N₂,SO₂,and Ar,where the Mole Fraction

question 120

Multiple Choice

A gas mixture consists of N₂,SO₂,and Ar,where the mole fraction of N₂ is 0.55 and the mole fraction of Ar is 0.25.If the mixture is at STP in a 5.0 L container,how many molecules of SO₂ are present?

• A) 4.5 × 10²² molecules SO₂
• B) 2.7 × 10²² molecules SO₂
• C) 3.7 × 10²³ molecules SO₂
• D) 1.1 × 10²³ molecules SO₂
• E) 9.3 × 10²⁴ molecules SO₂

---

Definitions:

PHStat

An Excel add-in that enhances the statistical functions of Microsoft Excel, providing tools for analysis and decision making in business.

Expected Monetary Value

A decision-making tool in risk management that combines the probabilities of different outcomes with the monetary gains or losses they would produce, to estimate the average outcome.

PHStat

An Excel add-in that enhances and expands upon the statistical capabilities provided by Microsoft Excel.

Return To Risk Ratio

A financial metric used to evaluate the potential return of an investment relative to its risk.