30. Bio-Indicators of aquatic health are best observed under which conditions? A. once every ten years
B. at the surface, every year
C. once a year at many depths of water.
D. many times a year at many depths

What statement goes against the kinetic theory of gases

Achemist needs to prepare a buffer solution of ph 8.80. what molarity of nh3 (pkb = 4.75) is required to produce the buffer solution if the (nh4)2so4 in the solution is 1.8 m?

Use the periodic table to answer the following questions. what is the predicted order of first ionization energies from highest to lowest for beryllium, calcium, magnesium, and strontium? o be > ca > mg > sr o be > mg > ca > sr o ca > sr> be > mg o sr > ca > mg > be done