What Mass of Excess Reactant Remains at the End of the Reaction

question 107

Multiple Choice

What mass of excess reactant remains at the end of the reaction if 90.0 g of SO2 are mixed with 100.0 g of O2? 2SO₂ + O₂ → 2SO₃

• A)10.0 g
• B)12.5 g
• C)22.5 g
• D)55.0 g
• E)77.5 g

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Definitions:

Electron Transport Chain

A sequence of complexes involved in moving electrons from donors to acceptors through redox processes, while simultaneously moving protons across a membrane to produce ATP.

Citric Acid Cycle

A series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins into carbon dioxide and chemical energy.

ATP Generation

The process by which adenosine triphosphate (ATP), the cell's energy currency, is produced, commonly through cellular respiration or photosynthesis.

Lactate

A compound produced during anaerobic metabolism, often associated with muscle fatigue.