A 240 Kg Sample of Ice Is at 0

question 66

Multiple Choice

A 24.0 kg sample of ice is at 0.00°C.How much heat is needed to melt it? (For water Lf = 334 kJ/kg and Lv = 2257 kJ/kg. )

• A)8.02 × 10³ kJ
• B)2.19 × 10⁶ kJ
• C)0.00 kJ
• D)5.42 × 10⁴ kJ

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Definitions:

Probability Level

A statistical threshold, often denoted by alpha, which determines the cutoff point at which a result is considered statistically significant.

Statistically Significant

Refers to a result that is unlikely to have occurred by chance alone, according to a predetermined threshold in statistical testing.

F-test

is a statistical test used to compare the variances of two populations, based on sample variances, to assess the equality of the populations' means.

Hypothesis

A proposed explanation or prediction about a phenomenon that can be tested through research and experimentation.