The Standard Molar Enthalpy of Formation of NH₃(g) Is -45

question 20

Multiple Choice

The standard molar enthalpy of formation of NH₃(g) is -45.9 kJ/mol. What is the enthalpy change if 9.51 g N₂(g) and 1.96 g H₂(g) react to produce NH₃(g) ?

• A) -10.3 kJ/mol-rxn
• B) -20.7 kJ/mol-rxn
• C) -29.8 kJ/mol-rxn
• D) -43.7 kJ/mol-rxn
• E) -65.6 kJ/mol-rxn

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Definitions:

Partnership

An authorized business entity run by two or more partners who equally divide management duties and earnings.

Limited Partnership

A business structure where at least one partner has unlimited liability and other partners have liability limited to the amount of their investment.

Limited Liability Partnership

A partnership in which some or all partners have limited liabilities, protecting them from the debts of the partnership beyond their investment.

General Partner

A type of owner in a partnership who has unlimited liability and is actively involved in the management of the business.