The Catalytic Decomposition of Hydrogen Peroxide Yields Oxygen Gas and Water

question 74

Multiple Choice

The catalytic decomposition of hydrogen peroxide yields oxygen gas and water. In an experiment, decomposition of hydrogen peroxide yielded 75.3 mL of gas collected over water at 25°C and 742 torr. What mass of oxygen gas was collected? (P_water = 24 torr at 25°C, R = 0.08206 L • atm/K • mol)

• A) 0.00291 g
• B) 0.0931 g
• C) 0.0962 g
• D) 0.0993 g
• E) 0.962 g

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Definitions:

Local Potential

A temporary, localized change in the resting potential of a neuron that makes it more likely or less likely to fire an action potential.

Threshold

The minimum level of stimulus intensity required to activate a neural response or trigger a physiological process.

Na+

Sodium ion, a vital electrolyte in the human body that helps regulate fluid balance and nerve function.

White Matter

A component of the central nervous system, primarily consisting of myelinated nerve fibers and responsible for communication between different brain regions.