50 points for 2 questions and brainliest! Please help 1) In the following reaction, what is the ratio of zinc chloride (ZnCl2) to potassium chloride (KCl)?
The equation - 2K(MnO4) + ZnCl2 → Zn(MnO4)2 + 2KCl 10.

2) If six moles of hydrogen chloride (HCl) react with plenty of aluminum, how many moles of aluminum chloride (AlCl3) will the reaction produce?
The equation - 2Al + 6HCl → 2AlCl3 + 3H2

a)

Explanation:

6HCl + 2Al ---> 2AlCl3 + 3H2

6 mol                 2 mol

As we can see 6 mol HCl produce 2 mol AlCl3.

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