A Gas Mixture Consists of N₂,O₂,and Ne,where the Mole Fraction

question 109

Multiple Choice

A gas mixture consists of N₂,O₂,and Ne,where the mole fraction of N₂ is 0.55 and the mole fraction of Ne is 0.25.If the mixture is at STP in a 5.0 L container,how many molecules of O₂ are present?

• A)4.5 × 10²² molecules O₂
• B)2.7 × 10²² molecules O₂
• C)3.7 × 10²³ molecules O₂
• D)1.1 × 10²³ molecules O₂
• E)9.3 × 10²⁴ molecules O₂

Understand the different roles of species within ecosystems and their ecological significance.

Comprehend the concepts and examples of plant defenses against herbivory.

Grasp the defining characteristics and examples of ecological niches.

Identify the various types of species interactions and their ecological impacts.

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Definitions:

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