Given That Molar Enthalpy of Combustion of Acetylene (C₂H₂, 26 $\degree$

question 198

Multiple Choice

Given that molar enthalpy of combustion of acetylene (C₂H₂, 26.04 g/mol) is -1299 kJ/mol at 25 $\degree$ C and 1 atm, which statement below is FALSE? $\mathrm{C}_{2} \mathrm{H}_{2}(g) +\frac{5}{2} \mathrm{O}_{2}(g) \rightarrow 2 \mathrm{CO}_{2}(g) +\mathrm{H}_{2} \mathrm{O}(\ell)$

• A)The enthalpy of the reactants is lower than that of the products.
• B)The amount of heat released is proportional to the amounts of reactants.
• C)When 104 g C₂H₂ combusts, about 5200 kJ of heat is released.
• D)The enthalpy of combustion per gram acetylene is-49.9 kJ/g.
• E)To form 2 mol C₂H₂ and 5 mol O₂ from 4 mol CO₂ and 2 mol H₂O, 2598 kJ of energy is required.

Understand common errors and phenomena associated with memory (e.g., source-monitoring error, misinformation effect).

Grasp the structure and implications of semantic networks and schemas on memory.

Appreciate the role of context and cues in memory retrieval.

Relate memory processes to real-world applications, particularly in eyewitness testimonies and everyday recollections.

---

Definitions:

Valuation Allowance

An accounting procedure that an entity might use against its deferred tax assets indicating that it is more likely than not that some portion or all of the asset will not be utilized.

Trading Investments

Assets held by a firm for the purpose of selling them in the short term to generate profit from price fluctuations.

Unrealized Gain

The increase in value of an asset that has not been sold, and thus the profit has not been realized as the asset remains part of the portfolio.

Income Statement

A report that outlines a company's financial activities, including earnings, expenses, and net profit or loss, during a particular accounting timeframe.