A Stirred Tank with Volume, V, Has a Feed Stream

question 57

Multiple Choice

A stirred tank with volume, V, has a feed stream of concentrated floor cleaner flowing into it at a rate of f . The flow stream has a concentration of c_i. The outlet stream also flows at f but with a concentration of c, the concentration of the floor cleaner solution in the tank. The rate of change of the concentration is proportional to the difference between c_i and c with proportionality constant of f/V: . If the tank volume is 1000 L, the flow rate is 10 L/min, the inlet concentration is 1.0, and the initial concentration of the floor cleaner in the tank is 0.0, how long until the concentration in the tank is 0.7?

• A) 12.0 minutes
• B) 120.4 minutes
• C) 100.0 minutes
• D) 35.7 minutes

Recognize characteristics of data distribution, including skewness.

Distinguish between frequency, relative frequency, cumulative frequency, and percent frequency.

Calculate and interpret percentages from a crosstabulation.

Understand the presentation of data in crosstabulation format, including frequencies and percentages.

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Definitions:

Social Control

Mechanisms, strategies, and institutions society employs to persuade or enforce conformity to its norms and rules.

Audience Reactions

involve the responses or feedback from spectators or listeners to a particular event, performance, or presentation.

Daytime Television

Television programming that is broadcast during the daytime hours, often targeting audiences at home during the day such as homemakers or the unemployed.

Mass Media

The means of communication that reach large numbers of people, such as newspapers, television, and the internet, influencing public opinion and social norms.