The oxidation number of calcium in calcium sulfate, CaSO4, is _____.

In the reaction shown, how many moles of HCl are needed to react with 4.0 moles of Al? 2 Al + 6 HCl → 2 AlCl3 + 3 H2

In the following reaction, identify the element that is oxidized, and the element that is reduced.  Explain. 2 Fe(s) + 3 Cl2 (g) → 2 FeCl3 (s)

What is the most abundant antibody class in the body?

What is the major antibody class that protects mucosal surfaces (i.e., present at the highest concentration)?

What is a granuloma?

Which of the following is an example of white-collar crime?

It is illegal to marry one’s parent, brother or sister.  These laws promote: 

Kyle marries his high school sweetheart.  After a few years, they grow apart and get a divorce.  Kyle meets Cindy and starts dating again.  Eventually Kyle and Cindy marry and have children.  They stay together until Cindy passes away.  Kyle then meets Judy in a grief support group and they end up getting married about a year later.  Kyle’s experience reflects:

Who is most likely to experience role exit?