All regular solutions with positive heats of mixing have the same value of the activity of its components (a or b) at the critical point of the miscibility gap calculate this activity b. plot temperature versus ag for a regular solution miscibility gap a.

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom