A Student Heats Water and Carefully Dissolves a Solute and Then

question 47

Multiple Choice

A student heats water and carefully dissolves a solute and then leaves the transparent solution on the lab bench.Later, she comes back to find that her solution is cloudy and has small solid particles in it.What happened?

• A) The hot solution must have been supersaturated.
• B) The hot solution must have been unsaturated.
• C) As the solution cooled, it became a saturated solution and some of the solute precipitated.
• D) As the solution cooled, it became a supersaturated solution and some of the solute precipitated.
• E) As the solution cooled, it became an unsaturated solution and some of the solute precipitated.

---

Definitions:

Economic Profits

The total revenue of a business minus its explicit and implicit costs; a measure of incremental gain over the total costs, including opportunity costs.

Supply Curve

A graph showing the relationship between the price of a good and the quantity supplied by producers.

Long-run Equilibrium

A state in which all factors of production and outputs are variable, allowing for the adjustment of all inputs, leading to a balanced economic condition over time.

Zero Economic Profits

Occurs when a firm earns just enough revenue to cover its total costs, including opportunity costs, but no more.