The principal reason that oil and water do not mix, even when shaken, is that oil molecules __________.
-have no latent heat
-have a high heat capacity
-are nonpolar whereas water molecules are polar
-are organic
-are smaller than water molecules
-are nonpolar whereas water molecules are polar
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Which of the following affects the greatest number of people in the developing world?
A) Water availability B) Lack of primary schools for children C) Inadequate sanitation D) No childhood immunization for measles
Which of the following is not the molecular formula of a noncyclic alkane?
A) C15H32 B) C19H38 C) C20H42 D) C22H46
The International Date Line generally follows the 180th meridian
Indicate whether the statement is true or false
This scientist wrote a book entitled Dialogue of the Great World Systems that compared the Earth-centered system with the Sun-centered system
A) Sir Isaac Newton B) Nicolaus Copernicus C) Johannes Kepler D) Tycho Brahe E) Galileo