Which two features of Earth's crust involve tension? O A. Convergent boundaries
O B. Divergent boundaries
O C. Reverse faults
O D. Normal faults

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

Is powdered sports drink ionic or covalent ? 10pts !

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.