A student places a 12-gram cube of ice inside a container. After six hours, the student returns to observe the contents of the container. Which sentence suggests that the container is an open system? A. 

The container contains 12 grams of liquid water and no ice.

B. 

The container contains 12 grams of ice and no liquid water.

C. 

The container contains 8 grams of liquid water and no ice.

D. 

The container contains 8 grams of ice and 4 grams of liquid water.

E. 

The container contains 8 grams of liquid water and 4 grams of water vapor.

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

What state of matter is ice a. liquid b. element c. solid d. gas

How does blood clotting prevent the entry of pathogens through cuts and wounds? answer asap,, this is due tomorrow. will mark as brainliest or whatever you call it : )