Molecular Speeds: a Sealed Container Holds 0

question 15

Multiple Choice

Molecular speeds: A sealed container holds 0.020 moles of nitrogen (N₂) gas at a pressure of 1.5 atmospheres and a temperature of 290 K. The atomic mass of nitrogen is 14 g/mol. The Boltzmann constant is 1.38 × 10^-23 J/K and the ideal gas constant is R = 8.314 J/mol ∙ K = 0.0821 L ∙ atm/mol ∙ K. The average translational kinetic energy of a nitrogen molecule is closest to

• A) 4.0 × 10^-21 J.
• B) 6.0 × 10^-21 J.
• C) 8.0 × 10^-21 J.
• D) 10 × 10^-21 J.
• E) 12 × 10^-21 J.

Recognize the importance of mutualistic relationships in ecosystems and their role in species adaptation.

Understand the consequences of introducing non-native species to ecosystems.

Grasp the concepts of ecological succession and community development.

Learn the significance of ecological terms such as resilience, constancy, and stability in population and ecosystem dynamics.

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Definitions:

Egocentrism

describes the cognitive inability to distinguish between one's own perspective and that of others, frequently observed in young children.

Decentration

Simultaneous focusing on more than one dimension of a problem, so that flexible, reversible thought becomes possible.

Ultrasound

A diagnostic medical procedure that uses high-frequency sound waves to produce images of structures within the body, such as organs and vessels.

Prenatal Development

The process of growth and development within the womb from conception to birth, covering stages from zygote, embryo, to fetus.