A 200-Kg Block of Ice at 0

question 12

Multiple Choice

A 2.00-kg block of ice at 0.00°C is dropped into a very large lake at 25.0°C and completely melts.For water,the heat of fusion is 3.35 × 10⁵ J/kg,the heat of vaporization is 2.25 × 10⁵ J/kg,and the specific heat is 4190 J/kg ∙ K.The net change in entropy of the system consisting of the ice and the lake due to this melting process is closest to

• A)2.45 × 10³ J/K.
• B)2.24 × 10³ J/K.
• C)2.06 × 10² J/K.
• D)-2.45 × 10³ J/K.
• E)-2.06 × 10² J/K.

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Definitions:

Multiregional Hypothesis

A theory regarding human evolution that suggests modern humans evolved from earlier hominid populations in various regions simultaneously, rather than from a single origin point.

Anatomically Modern Humans

Homo sapiens characterized by skeletal features that are similar to those of humans living today.

Recent African Origins Hypothesis

An evolutionary theory suggesting that modern humans evolved in Africa relatively recently and share a common ancestry.

Eve Hypothesis

A scientific theory suggesting that all modern humans have descended from a common maternal ancestor, dubbed "Mitochondrial Eve," who lived in Africa.