Lightweight Camping Stoves Typically Use a Mixture of C₅ and C₆

question 144

Multiple Choice

Lightweight camping stoves typically use a mixture of C₅ and C₆ hydrocarbons,which is called white gas.Assuming white gas is 100% C₆H₁₄ with an enthalpy of combustion of -4150 kJ/mol,how many grams of it must be used to heat 1.50 L of water from 20.0°C to 90.0°C? Assume all the energy is used to heat the water.

• A)8.96 g
• B)9.65 g
• C)9.11 g
• D)7.64 g
• E)10.73 g

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Definitions:

Choanae

The internal openings of the nostrils in the pharynx; posterior nasal apertures.

Epiglottis

A leaf-shaped flap in the throat that prevents food and drink from entering the windpipe during swallowing.

Parietal Pleura

The part of the pleura that lines the inner surface of the chest wall and diaphragm, but does not cover the lungs.

Visceral Pleura

The inner layer of the pleura that covers the lungs, closely adhering to the lung surfaces and extending into the fissures between the lobes.