Using the Following Thermochemical Equation,determine the Amount of Heat Produced $\mathrm { mol } ^ { - 1 }$

question 108

Multiple Choice

Using the following thermochemical equation,determine the amount of heat produced from the combustion of 24.3 g benzene (C₆H₆) .The molar mass of benzene is 78.11 g $\mathrm { mol } ^ { - 1 }$ 2C₆H₆(l) + 15O₂(g) ? 12CO₂(g) + 6H₂O(g)
D_rH° = -6278 kJ

• A)3910 kJ C₆H₆
• B)1950 kJ C₆H₆
• C)977 kJ C₆H₆
• D)40.1 kJ C₆H₆
• E)0.302 kJ C₆H₆

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Definitions:

Absorption Costing

This accounting system ensures the inclusion of all manufacturing-related expenses, such as direct materials, direct labor, and both variable and fixed overheads, into the cost of producing a product.

Variable Costing

An accounting technique that incorporates just the variable costs of production (such as direct materials, direct labor, and variable manufacturing overhead) into the costs of products.

Fixed Overhead

Regular, static expenses that do not change with the level of production or sales, including rent, salaries, and insurance.

Net Income

The profit of a company after all expenses and taxes have been deducted from revenue.