A 850.0 mL cylinder containing B2H6 at a pressure of 0.900 atm is connected by a valve to 1000 mL cylinder containing C6H6 at 608.0 torr pressure. Calculate the partial pressure (torr) of C6H6 when the valve is opened.

The partial pressure of when the valve is opened is 328.6 Torr.

Explanation:

Initial pressure of the

Initial volume of the

After opening the valve :

Final pressure or partail pressure of the

Final volume of the

( Boyle's law)

The partial pressure of when the valve is opened is 328.6 Torr.

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

a polar bond is formed when electrons are shared unevenly between atoms