A sample of gas is held at constant temperature. If the volume of this sample of gas is doubled and the number of moles of this sample of gas is doubled, what happens to the pressure of the gas?
Select one:
a. The pressure is doubled.
b. The pressure is halved.
c. The pressure is quadrupled.
d. The pressure is quartered.
e. The pressure stays the same.

How does the digestive system interact with the circulatory system? a. messages sent as electrical impulses from the digestive system are transported throughout the body by the circulatory system. b. nutrients taken in and broken down by the digestive system are carried to various parts of the body by the circulatory system. c. nutrients and gases are absorbed by organs in the circulatory system. then, they are transported to all parts of the body by organs in the digestive system. d. oxygen and carbon dioxide are exchanged by organs in the digestive system, and the gases are carried to the rest of the body by the circulatory system.