The Enthalpy Change for Converting 10

question 99

Multiple Choice

The enthalpy change for converting 10.0 g of ice at -50.0 °C to water at 50.0 °C is ________ kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H₂O, ΔH_fus = 6.01 kJ/mol, and ΔH_vap = 40.67 kJ/mol.

• A)12.28
• B)4.38
• C)3138
• D)6.47
• E)9.15

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Definitions:

Annual Rings

Concentric rings visible in the cross-section of a tree trunk representing a year's worth of growth; used to estimate age and historical climate conditions.

Tropical Rain Forest

A dense, warm, wet forest biome located near the equator, known for its high biodiversity and as the habitat for half of the Earth's plant and animal species.

Outward-Facing

Directed towards the exterior or outside of something.

Water Loss

The process through which water leaves the body or a system, which can occur through evaporation, excretion, or transpiration in plants.