Examlex
The molar mass of N₂O is 44 u.
One Drop Rule
A racial classification system that asserts any person with even one ancestor of sub-Saharan African ancestry ("one drop" of African blood) is considered Black.
Biological Definition
A precise scientific description of an organism or a condition using biological terms and concepts.
Race
In biology, the taxonomic category of subspecies that is not applicable to humans because the division of humans into discrete types does not represent the true nature of human biological variation. In some societies, race is an important cultural category.
Favism
A medical condition characterized by hemolytic anemia in response to ingestion of fava beans or exposure to certain drugs or infections, particularly affecting individuals with a deficiency in the enzyme glucose-6-phosphate dehydrogenase.
Q15: A gas is enclosed in a cylinder
Q26: According to the kinetic-molecular theory,gas molecules have<br>A)strong
Q41: Which one of the following is a
Q50: The black tarnish on silver is<br>A)AgOH.<br>B)Ag₂O.<br>C)AgCl.<br>D)Ag₂S.
Q65: Hydrogen and nitrogen react to form<br>A)NH.<br>B)NH₂.<br>C)NH₃.<br>D)NH₄.
Q85: Nuclear physicists have discovered over 100 different
Q104: Covalent bonds generally form between<br>A)ions.<br>B)metals.<br>C)metals and nonmetals.<br>D)nonmetals.
Q123: Which of the following statements about bases
Q178: Chalk is primarily composed of calcium carbonate.The
Q183: What is the name of the compound