See the equation below to answer the questions: 2C2H6(g) + 7O2(g)→6H2O(g) + 4CO2(g)
a. What minimum volume of oxygen will be required to completely react with 6.0 liters of C2H6?
b. How many molecules of H20 (g) will result if 1 x 10 23molecules of C2H6 completely react with excess of oxygen?

b is the correct

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

b. is the answer hoped i        

b) nuclear ive learned that in a pedtrodic table