Which conclusion is consistent with the following net ionic equation?
Co2+(aq) + S2 (aq) → CoS(s)
A.
CoS is soluble in water,
B.
S2-ions are a pure liquid.
C.
Co2+ ions are insoluble in water.
D.
CoS is a precipitate
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answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

l dont know l am s sorry

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.