Calculate the Enthalpy Change (In KJ)associated with the Conversion of 25.0

question 120

Multiple Choice

Calculate the enthalpy change (in kJ) associated with the conversion of 25.0 grams of ice at -4.00 °C to water vapor at 109.0 °C.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,Δ = 6.01 kJ/mol and Δ = 40.67 kJ/mol.

• A)64.8
• B)75.9
• C)11100
• D)12000
• E)112

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Definitions:

Interval Estimate

An estimate of a population parameter that provides a range of values believed to contain the parameter with a certain level of confidence.

Population Mean

The average of a set of values, taken from the entire population of data.

Confidence Level

The probability that a population parameter will fall between a set of values for a certain proportion of times.

Confidence Interval

A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter with a specified level of confidence.