A 100 G Sample Containing C, H, and N Yields 2

question 149

Multiple Choice

A 1.00 g sample containing C, H, and N yields 2.84 g of CO₂ and 0.677 g of H₂O when it reacts with excess oxygen. What is the empirical formula?

• A) C₃H₅N
• B) C₄H₇N
• C) C₅H₉N
• D) C₆H₇N
• E) none of these

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Definitions:

Porphyrin Ring

A large, ring-shaped molecule found in many biologically important molecules, such as heme, vital for carrying oxygen in blood.

Chlorophyll

A green pigment found in the chloroplasts of plants, algae, and some bacteria, essential for photosynthesis by capturing light energy.

CAM Plants

Plants that utilize Crassulacean Acid Metabolism, a photosynthetic adaptation to arid conditions where stomata open at night to minimize water loss.

Malate

A substance found in many fruits and vegetables, serving as an intermediate in the citric acid cycle within cellular metabolism.