11. You are a scientist studying the properties of an unknown substance. You made three distinct observations: 1.) Mass = 92.63 kg
2.) Volume = 12.173 cm
3.) Temperature = 101 °F
What is the mass in grams?
A. 926.3 grams
B. 9,263 grams
C. 92,630 grams
D. 926,300 grams
What is the density of the unknown substance?
A 760.9 g/cm
B. 7.609 g/cm
C. 14, 210 g/cm
D 1.421 g/cm3

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Explanation:

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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

c8h10 is your answerr