B. Solution 39 which statement about the process of dissolving is TRUE
A. Dissolving releases energy in the form of heat.
8. Solvent can be dissolved faster when stirring is applied.
C. Applying heat often speeds up the process of dissolving particles.
D. Once a solute, such as salt crystal is dissolved in a solvent such as
water, it can never return to its original crystal state.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

elements make up everything, and they combine to make compounds.

the answer is c

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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