Achemist divides a large sample of a mixture into three smaller portions. each of these portions contains different ratios of the component substances that make up the mixture. which description best fits the mixture?

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

Acontrol during an experiment. might change remains constant does not exist does change

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123