Which Has Not Been Suggested as a Reasonably Practical Way

question 58

Multiple Choice

Which has not been suggested as a reasonably practical way to store large amounts of hydrogen in relatively small spaces for its use as a fuel?

• A)Liquefy hydrogen under pressure and store it much as we do with liquefied natural gas today.
• B)Absorb hydrogen onto activated charcoal;then heat the mixture to release the hydrogen.
• C)Store it in the form of ionic metal hydrides,such as LiH,which release hydrogen gas when they react with water.
• D)Encapsulate hydrogen molecules in fullerene molecules (large,carbon-based molecules that can act like cages)that may be heated later to release the hydrogen.

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Definitions:

Prime Cost

The direct costs of manufacturing an item, which include direct materials and direct labor costs, but exclude overhead costs.

Conversion Cost

The total expenses of direct labor plus manufacturing overheads used to transform raw materials into finished products.

Cost of Goods Manufactured

The total cost of materials, labor, and manufacturing overhead used to produce goods over a specific period.

Cost of Goods Sold

The expenses directly tied to the manufacture of products sold by a business, encompassing both materials and wages.