Calculate the Mole Fraction of HCl in a 7

question 142

Multiple Choice

Calculate the mole fraction of HCl in a 7.20% (by mass) aqueous solution.

• A)0.0369
• B)0.0383
• C)0.0739
• D)0.0185
• E)The density of the solution is needed to solve the problem.

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Definitions:

Cochlea

A spiral-shaped cavity of the inner ear that is primarily responsible for converting sound vibrations into nerve impulses.

Amplitude

In physics, this term describes the maximum extent of a vibration or oscillation, measured from the position of equilibrium.

Frequency

The number of wave peaks per second. In sound, frequency governs the perceived pitch of the sound.

Pitched

Used to describe a speech or proposal that has been presented to an audience with the intention of persuading them.