Balance agl + fe2(co3)3 = fel3 + ag2co3

6AgI + Fe₂(CO₃)3 → 2FeI₃+ 3Ag₂CO₃

In this case;

6AgI + Fe₂(CO₃)3 → 2FeI₃+ 3Ag₂CO₃

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

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons