How Much Heat Is Required to Change 456 G of Ice

question 65

Multiple Choice

How much heat is required to change 456 g of ice at -25.0°C into water at 25.0°C? The specific heat of ice is 2090 J/(kg K) and the latent heat of fusion of water is 33.5 × 10⁴ J/kg.

• A) 224 kJ
• B) 153 kJ
• C) 112 kJ
• D) 71.5 kJ
• E) 72.5 kJ

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Definitions:

Variation

The occurrence of differences in characteristics, traits, or outcomes among individuals within a population, group, or process.

Statistically Significant

A term indicating that the likelihood a result happened by chance is low, often used in research to confirm the reliability of findings.

Variability

The degree to which data points in a statistical distribution or set diverge from the average value and from each other.

Samples

Selected groups or portions of a population used in research to draw conclusions about the overall population based on their characteristics or responses.