A 20-Kg Ice Cube at 0

question 63

Multiple Choice

A .20-kg ice cube at 0.0°C has sufficient heat added to it to cause total melting,and the resulting water is heated to 70.0 °C. How much heat is added? For water L_F = 334,000 J/kg,L_V = 2.256 × 10⁶ J/kg,the c = 4.186 x 10³ J/kg ∙C.

• A)130 kJ
• B)14,000 kJ
• C)81 kJ
• D)59 kJ

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Definitions:

Twin Study

A study examining twins raised apart and together, usually to explore whether characteristics are caused by genetics or environment.

Nature-Versus-Nurture

A debate concerning the relative importance of an individual's innate qualities (nature) versus personal experiences (nurture) in determining or causing differences in physical and behavioral traits.

Monozygotic Twins

Identical twins sharing the same genetic profile.

Dizygotic Twins

Also known as fraternal twins, these are siblings born at the same time but from two different eggs fertilized by separate sperm, sharing about 50% of their DNA.