WILL GIVE 100 POINTS IF YOU HELP ASAP Research and write a short paper (1-2 pages) on the field of sound engineering or acoustic architecture. Be sure to include the kind of training that people need to practice in this field and the kinds of job opportunities that are available. You might want to look into anechoic chambers and write more about how they are made and what they are used for. HURRY IT DO TODAY

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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

14 days is the half-life of phosphorus-32