1 It can explain the relationship between the strengths of an acid and its conjugate base. 2  It can explain differences in the relative strengths of a pair of acids or a pair of bases.  It can explain the leveling effect of water the fact that strong acids and bases all have the same strength when dissolved in water.
Related to HIV & AIDS. FDA Approves First Drug for HIV Prevention. July 16, 2012 -- The FDA has approved use of the HIV drug Truvada to help people at high risk avoid infection with the AIDS virus. Truvada is already approved as part of treatment regimens for people with HIV infection.
STRIBILD combines 4 medicines into 1 pill to be taken once a day with food. STRIBILD is a complete single tablet regimen and should not be used with other HIV-1 medicines. STRIBILD does not cure HIV-1 infection or AIDS. To control HIV-1 infection and decrease HIV-related illnesses, you must keep taking STRIBILD.