Determine the Boiling Point of a Solution That Contains 78

question 34

Multiple Choice

Determine the boiling point of a solution that contains 78.8 g of naphthalene (C₁₀H₈, molar mass = 128.16 g mol^-1) dissolved in 722 mL of benzene (d = 0.877 g mL^-1) . Pure benzene has a boiling point of 80.1 °C and a boiling point elevation constant of 2.53 °C m^-1.

• A) 2.2 °C
• B) 2.5 °C
• C) 82.3 °C
• D) 80.4 °C
• E) 82.6 °C

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Definitions:

Sarcomere

The structural unit of a muscle fiber, consisting of a repeating sequence of actin and myosin filaments, responsible for muscle contraction.

Actin Myofilament

A protein filament essential to muscle contraction, part of the thin filaments in muscle fibers that slide over myosin for muscle movement.

Intercalated Disks

Specialized connections between cardiac muscle cells that facilitate the synchronized contraction of the heart.

Striations

Parallel lines or grooves on a surface, often referring to the pattern found on skeletal muscle fibers or certain types of rocks.