Why would solution iv be considered the most concentrated base out of the four substances?

it has the highest concentration of hydrogen ions.
it has the highest concentration of hydronium ions.
it has the highest concentration of oxide ions.
it has the highest concentration of hydroxide ions.

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table? atom p has an estimated zeff of 7 and is therefore to the left of atom q, which has a zeff of 6. atom p has an estimated zeff of 7 and is therefore to the right of atom q, which has a zeff of 6. atom p has an estimated zeff of 5 and is therefore below atom q, which has a zeff of 4. atom p has an estimated zeff of 5 and is therefore above atom q, which has a zeff of 4.

Is the flow of energy during vaporizing more like the flow during melting or during freezing