A hard water sample contains 0.0085% Ca by mass (in the form of Ca2+ ions). How many liters of water contains 1.2. g calcium ions?

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

24

i think tornado but not 100%