Oxygen Gas Is Formed by the Decomposition of Potassium Chlorate $\rightarrow$

question 144

Multiple Choice

Oxygen gas is formed by the decomposition of potassium chlorate at high temperatures according to the reaction 2 KClO₃ (s) $\rightarrow$ 2 KCl(s) +3 O₂ (g) .Suppose 1.23 g KClO₃ is placed in a container connected to an open-end mercury manometer on a day when atmospheric pressure is 1.00 atm.Once the reaction is complete, the height of the mercury column in the U-tube on the side of the reaction container rises by 172 mmHg.What is the pressure of O₂ gas produced by the reaction?

• A)1348 torr
• B)0.774 atm
• C)22.9 kPa
• D)0.559 bar
• E)36.7 in Hg

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Definitions:

Geometry

A branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs.

Motion Parallax

A depth cue that arises from the relative movement of objects as the observer moves, allowing the brain to gauge distance.

Distance Cue

Visual or auditory signals that help an observer judge how far away an object or sound source is.

Motion Parallax

A depth cue in visual perception where objects closer to the observer move faster across the visual field than objects further away.