A Technician Adds 0

question 30

Multiple Choice

A technician adds 0.250 L of 200 mM buffer stock solution to a volumetric flask and dilutes the stock to 1.0 L.What is the final concentration of the solution?

• A) 0.11 mM
• B) 110 mM
• C) 11 mM
• D) 50 mM
• E) 5.0 mM

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Definitions:

Matched Design

A research design that matches the experimental participants with control participants who are similar on key characteristics.

Epidemiological

Relating to the study of how disease rates vary among different population groups to identify patterns, causes, and control health problems.

Experimental

Referring to a method of investigation in the sciences and social sciences in which variables are manipulated to observe and measure effects on a particular outcome.

Natural

Pertaining to or derived from the physical world and the processes in it.