The Freezing Point of Ammonia (NH₃, 17 $\degree$ CIn an Experiment, 367

question 72

Multiple Choice

The freezing point of ammonia (NH₃, 17.04 g/mol) is -77.73 $\degree$ C.In an experiment, 367.2 grams of solid NH₃ at-77.73 $\degree$ C is used to cool 250.0 grams of liquid NH₃ from 25.00 $\degree$ C to the freezing point.Assume that the specific heat capacity of liquid NH₃ is 4.742 J/(g . $\degree$ C) .What is the enthalpy of fusion of ammonia?

• A)2.894 kJ/mol
• B)(-2.894 kJ/mol)
• C)5.652 kJ/mol
• D)(-5.652 kJ/mol)
• E)0.3315 kJ/mol

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Definitions:

Production Possibilities Curve

The production possibilities curve illustrates the maximum possible output combinations of two goods that an economy can achieve when all resources are fully and efficiently utilized.

Output

The cumulative volume of goods or services yielded by a business, industry, or economic structure.

Production Possibilities Diagram

A graphical representation showing the maximum number of output combinations that an economy can achieve using its resources efficiently.

Inefficiently

Operating in a manner that does not maximize productivity or wastes resources, leading to lower outputs for given inputs.