When strongly heated, magnesium sulfide formed a yellow crystalline deposit on the walls of a sealed reaction vessel. Metallic deposits were found on the bottom of the container.

Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .

Organisms are classified as producer or consumers according to the way they ?