Care Must Be Taken When Dissolving Solid Pellets of Sodium

question 17

Multiple Choice

Care must be taken when dissolving solid pellets of sodium hydroxide (NaOH) in water, because the temperature of the water can rise dramatically. Taking NaOH as the system, what can you deduce about the signs of the entropy change of the system (S_sys) and surroundings (S_surr) from this?

• A)(  S_sys  0 and  S_surr  0)
• B)(  S_sys  0 and  S_surr  0)
• C)(  S_sys  0 and  S_surr  0)
• D)(  S_sys  0 and  S_surr  0)
• E)Nothing can be deduced from this limited information.

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Definitions:

Underapplied

Underapplied refers to a situation where the allocated or estimated costs for a particular period are less than the actual costs incurred.

Overapplied

A situation where the allocated overhead costs for production exceed the actual overhead expenses incurred.

Direct Materials

Basic substances that can be directly linked to the production process of a good.

Direct Labor

Labor costs that can be directly traced to the production of specific goods or services, such as wages for assembly line workers.