A 100-ML Sample of Water Is Taken from the Pacific Ocean

question 94

Multiple Choice

A 100.-mL sample of water is taken from the Pacific Ocean, and the water is allowed to evaporate. The salts that remain (mostly NaCl) have a mass of 3.85 g. Calculate the original concentration of NaCl, in g per liter, in the water sample.

• A) 32.5 g/L
• B) 34.5 g/L
• C) 36.5 g/L
• D) 38.5 g/L
• E) None of the above

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Definitions:

Additive Strategy

An approach to decision making that involves considering all the important attributes of a choice and explicitly adding up their respective values to make a decision.

Heuristics

Mental shortcuts or rules of thumb that simplify decision making, but can lead to biases or errors in judgment.

Functional Fixedness

The failure to use familiar objects in novel ways to solve problems because of a tendency to view objects only in terms of their customary functions.

Problem-Solving Difficulty

Challenges or hindrances faced while attempting to find solutions or overcome obstacles.