For each of the treatments listed below, indicate whether you would recommend it (yes) or not (no) to correct Mary’s problem? Explain what eff ect each treatment would have upon her blood pH. a. Breathing in a paper bagb. An IV containing pure HCO3- in an isotonic solutionc. Holding her breath for as long as she cand. An IV containing pure CO3-2 in an isotonic solution

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