A mixture 20.4 g of P and 78.4 g Cl2 reacts completely to form PCl3 and PCl5 as the only products. Find the mass of PCl3 formed.

answer is d because it is trust me

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

sure im new too!

explanation: