At which point on a phase diagram do you have a solid, liquid, and a gas at the same time? boiling point, triple point, melting point, critical point

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town