Why is the water in the sealed chamber able to boil at room temperature? A. This sealed chamber is placed below sea level. O B. This sealed chamber is an open system, C. The vacuum pump is increasing the pressure inside the chamber. O D. The vacuum pump is reducing the pressure inside the chamber.

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

Which description best characterizes the motion of particles in a solid?