From left to right, the three regions of a phase diagram represent the _____ of a substance.

Chemistry

2 answers:

timofeeve [1]3 years ago

5 0

Your answer is D.

:good luck

olya-2409 [2.1K]3 years ago

5 0

Answer: D solid phase, liquid phase, and gas phase

Explanation: The phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure. The temperature is usually plotted on X axis and pressure is plotted on Y axis.

Thus as we increase the temperature and move from left to right the phase will change from solid and liquid as the kinetic energy of the molecules will increase and on further increasing the temperature, the liquid phase will change to gaseous phase as molecules will gain more kinetic energy on further increasing the temperature.

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A catalyst decreases the activation energy of a particular exothermic reaction by 56 kJ/mol, to 35 kJ/mol. Assuming that the mec

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Activation energy for the uncatalyzed reverse reaction = 103 kJ/mol

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Activation energy decreases from = 56 kj/mol to 35 kj/mol

products = 78 KJ lower in energy than reactants

Activation energy for the uncatalyzed reverse reaction = 103 kJ/mol

attached below are the sketches of approximate energy-level for both catalyzed and uncatalyzed reactions