How Many C₂H₄ Molecules Are Contained in 45

question 2

Multiple Choice

How many C₂H₄ molecules are contained in 45.8 mg of C₂H₄? The molar mass of C₂H₄ is 28.05 g/mol.

• A) 9.83 × 10²⁰ C₂H₄ molecules
• B) 7.74 × 10²⁶ C₂H₄ molecules
• C) 2.71 × 10²⁰ C₂H₄ molecules
• D) 3.69 × 10²³ C₂H₄ molecules
• E) 4.69 × 10²³ C₂H₄ molecules

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Definitions:

Gallflies

Gallflies are a type of insect known for inducing growths, or galls, on plants, within which they then live and feed.

Parasitoid Wasps

Insects that lay their eggs on or in other insects, with the larvae eventually killing the host.

Stabilizing

A type of natural selection that favors the average individuals in a population, thereby maintaining the population's genetic variation.

Directional

In evolutionary biology, a type of natural selection that favors one extreme phenotype over others, causing a shift in the population's phenotypic distribution over time.