A “double blind study” in which the researchers themselves do not even know which group is the placebo group and which group is a medicated group is more accurate than one in which the researchers know what the participants are getting. Why?

the ratio of the conjugate base to the acid required to attain the desired ph.

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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