In 2011, the Average Age of Fathers at the Time

question 42

Multiple Choice

In 2011, the average age of fathers at the time of the birth of their first biological child was _____ years.

• A) 25.6
• B) 26.8
• C) 28.3
• D) 30.2

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Definitions:

Potassium

A soft, silvery-white metallic element, very reactive, especially in water, and essential for plant and animal life.

KCl

KCl, known as potassium chloride, is a metal halide salt composed of potassium and chlorine, used in medicine, food processing, and as a fertilizer.

Moles

A unit of measure in chemistry that represents 6.022 x 10^23 particles of a substance.

Li

The elemental symbol for Lithium, a soft, silver-white metal belonging to the alkali metal group.