What is the pressure in a gas container that is connected to an open-end u-tube manometer if the pressure of the atmosphere is 752 torr and the level of mercury in the arm connected to the container is 8. 60 cm higher than the level of mercury open to the atmosphere?.

Which of the following ideas did greek philosopher democritus contribute to the atomic theory? a. each object is made up of one atom, which varies in size from very small to very large. b. matter is composed of only one kind of particle, which can be easily destroyed. c. every element has a specific type of atom, which remains the same size in all forms of matter. d. all matter is composed of small particles, which combine to make larger objects.