When You Set a Pot of Tap Water on the Stove

question 55

Multiple Choice

When you set a pot of tap water on the stove to boil,you'll often see bubbles start to form well before boiling temperature is ever reached.Explain this observation.

• A)These are dissolved salts heating up and escaping from the water.
• B)These bubbles are formed as the surrounding gases from the air dissolve into the water as it is heated.
• C)They are very minute pockets of water in the gaseous phase.When they get large enough,the water will boil as this gas escapes.
• D)These initial bubbles are the gases that were dissolved in the water coming out of solution.The solubility of gases in water decreases with increasing temperature.

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Definitions:

Continuous Variables

Variables that can take on an infinite number of values or levels.

Binomial

Pertaining to a probability distribution that models the number of successes in a fixed number of trials, with only two possible outcomes.

Normal Probability Distribution

Describes a symmetrical, bell-shaped curve where most occurrences take place at the central peak and probabilities for values taper off equally on either side.

Binomial Probability Distribution

A probability distribution that summarizes the likelihood that a variable will take one of two independent values under a given set of parameters or assumptions.