A sealed plastic bag is filled with 1 l of air and has a pressure of 101.3 kpa. You sit on the bag and the pressure increases to 500 kpa. What is the volume of the bag as you are sitting on it? (T is constant)

The answer to your question is   V2 = 0.203 kPa

Explanation:

Data

Volume 1 = V1 = 1l

Pressure 1 = P1 = 101.3 kPa

Volume 2= V2 = ?

Pressure 2 = 500 kPa

Process

- Use the Boyle's law to solve this problem

               P1V1 = P2V2

-Solve for V2

              V2 = P1V1/P2

-Substitution

             V2 = (101.3 x 1) / 500

-Simplification

            V2 = 101.3 / 500

-Result

            V2 = 0.203 kPa

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

the answer is minerals.