Which of the Equations Below Corresponds to the Standard Molar

question 24

Multiple Choice

Which of the equations below corresponds to the standard molar enthalpy of formation for AgNO₃, D H _f(AgNO₃) ?

• A) Ag (s) + ¹/₂ N₂ (g) + ³/₂ O₂ (g)→ AgNO₃ (s)
• B) Ag⁺¹ (aq) + NO₃ ^{- 1} (aq)→ AgNO₃ (s)
• C) Ag (s) + N (g) + O₃ (g)→ AgNO₃ (s)
• D) 2 Ag (s) + N₂ (g) + 3 O₂ (g)→ 2 AgNO₃ (s)

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Definitions:

Defined Contribution Plan

A retirement savings plan where an employer or employee contributes a fixed amount or percentage of the employee's salary into their account, and the retirement benefit depends on the account's investment performance.

Risk-free Return

The theoretical return on an investment with no risk of financial loss, typically represented by the return on government securities.

Standard Deviation

A statistical measure that quantifies the amount of variability or dispersion around an average.

Defined Contribution Plan

A type of retirement plan where an employer, employee, or both make contributions on a regular basis, and future benefits fluctuate based on investment performance.