What Mass of Ethane (CH₃CH₃) Is Contained in 50

question 155

Multiple Choice

What mass of ethane (CH₃CH₃) is contained in 50.0 mL of a 13.9% by mass solution of ethane in hexane? The density of the solution is 0.611 g mL^-1.

• A) 2.35 g
• B) 8.49 g
• C) 11.8 g
• D) 6.95 g
• E) 4.25 g

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Definitions:

Inspirations

The act of inhaling or drawing air into the lungs as part of breathing.

Expirations

The process of exhaling air out of the lungs; a crucial component of breathing and gas exchange in the respiratory system.

Dorsal Respiratory Group

A cluster of neurons located in the medulla oblongata that plays a crucial role in regulating the rhythm of breathing.

Central Chemoreceptors

Brainstem neurons that detect changes in the pH of cerebrospinal fluid and help regulate ventilation rate.