Are the electrons shown the only actually present?
Explain.

Why are the central atoms
shown as positively charged?

In which phase(s) do the molecules take the shape of the container?

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.