The maximum number of amino acid side chains that can potentially form an ionic bond ( - interaction) with the side chain of His is _at pH 2.1 ; ___at pH 7 and __at pH 11.5 and __at pH 13.5. (assume no partial charges, only /- whole number integers)

An ice cube with a volume of 45.0ml and a density of 0.9000g/cm3 floats in a liquid with a density of 1.36g/ml. what volume of the cube is submerged in the liquid

Distilled water is a completely neutral solution. what is its ph? a. 1 b. 7 c. 14 d. 0

Island arcs island arcs are long, curved chains of oceanic islands associated with seismic activity and mountain-building processes at certain plate boundaries. they occur where oceanic tectonic plates collide. along one side of these island arcs, there is usually a long, narrow deep-sea trench. at island arcs, the denser plate is subducted and is forced into the partially molten mantle under the less dense plate. the islands are composed of the extrusive igneous rocks basalt and andesite. the basalt originates most likely from the plastic mantle. the andesite originates most likely from the melting of parts of the descending plate and sediments that had accumulated on its surface. which list identifies minerals present in andesite from the greatest percentage by volume to the least percentage by volume?