Prepare a dialogue between two friends about development of society .​

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.