Lightweight Camping Stoves Typically Use a Mixture of C₅ and C₆

question 40

Multiple Choice

Lightweight camping stoves typically use a mixture of C₅ and C₆ hydrocarbons, which is called white gas. Assuming white gas is 100% C₅H₁₂ with an enthalpy of combustion of -3550 kJ/mol, how many grams of it must be used to heat 1.50 L of water from 20°C to 80°C? Assume all the energy is used to heat the water.

• A) 8.96 g
• B) 7.64 g
• C) 9.65 g
• D) 6.99 g
• E) 10.73 g

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Definitions:

Variable Costing

A pricing approach that incorporates just the variable production expenses, such as direct materials, direct labor, and variable manufacturing overhead, into the costs of products.

Unit Product Cost

The total cost to produce a single unit, including direct materials, direct labor, and allocated overhead.

Variable Costing

An accounting approach that includes only variable costs—direct materials, direct labor, and variable manufacturing overhead—in product costs, excluding fixed manufacturing overhead.

Unit Product Cost

The calculated cost of producing a single unit of product, which includes both fixed and variable costs.